Contact : Virginie Zéninari

2024

Mapping gas–phase CO2 in the headspace of two champagne glasses through infrared laser absorption spectroscopy: ŒnoXpert glass versus INAO glass, V. Alfonso, F. lecasse, R. Vallon, C. Cilindre, B. Parvitte, V. Zéninari, G. Liger-Belair, Oeno One, 58-2, 12 pages (2024) https://doi.org/10.20870/oeno-one.2024.58.2.7886

2023

Intrapulse Measurement Using a Quantum Cascade Laser Coupled with a Compact Dense Pattern Multipass Absorption Cell for Carbon Dioxide Monitoring, C. Jacquemin, F. Defossez, R. Vallon, B. Parvitte, G. Maisons, M. Carras, V. Zéninari, Journal of the Optical Society of America B: Optical Physics, 40, Issue 1, pp. A21-A27 (2023), https://doi.org/10.1364/JOSAB.469404

2022

Mode-hop compensation for intracavity sensing via chip voltage in an external cavity QCL, L. Bizet, R. Vallon, B. Parvitte, G. Maisons, M. Carras, V. Zéninari, Applied Physics B, 128 (9), 166, 8 pages (2022), https://doi.org/10.1007/s00340-022-07882-z

An infrared laser sensor for monitoring gas-phase CO2 in the headspace of Champagne glasses under wine swirling conditions, F. Lecasse, R. Vallon, F. Polak, C. Cilindre, B. Parvitte, G. Liger-Belair, V. Zéninari, Sensors, 22 (15), 5764. 12 pages (2022), https://doi.org/10.3390/s22155764

2021

How does gas-phase CO2 evolve in the headspace of champagne glasses?, A.-L. Moriaux, R. Vallon, F. Lecasse, N. Chauvin, B. Parvitte, V. Zeninari, G. Liger-Belair, C. Cilindre, Journal of Agricultural and Food Chemistry, 69, 7, 2262-2270 (2021), https://doi.org/10.1021/acs.jafc.0c02958

2020

Widely-Tunable Quantum Cascade-based Sources for the Development of Optical Gas Sensors, V. Zeninari, R. Vallon, L. Bizet, C. Jacquemin, G. Aoust, G. Maisons, M. Carras, B. Parvitte, Sensors 20, pp. 6650 15 pages (2020), https://doi.org/10.3390/s20226650

A first step towards the mapping of gas-phase CO2 in the headspace of champagne glasses, A.-L. Moriaux, R. Vallon, C. Cilindre, F. Polak, G. Liger-Belair, B. Parvitte, V. Zeninari, Infrared Physics and Technology 109, 103437, 9 pages (2020), https://doi.org/10.1016/j.infrared.2020.103437

Quantitative Finite Element Modelling of Compact Photoacoustic Gas Sensors, B. Parvitte, R. Vallon, C. Mohamed Ibrahim, C. Jacquemin, V. Zeninari, Journal of Materials Sciences and Applications 3, pp. 1-8 (2020), https://doi.org/10.17303/jmsa.2020.4.101

2019

Design and implementation of a heliostat for atmospheric spectroscopy, M.-H. Mammez, R. Vallon, F. Polak, B. Parvitte, V. Zeninari, Infrared Physics and Technology 97 pp. 235-243 (2019), http://doi.org/10.1016/j.infrared.2019.01.006

2018

Monitoring gas-phase CO2 in the headspace of champagne glasses through combined diode laser spectrometry and micro-gas chromatography analysis, A.-L. Moriaux, R. Vallon, B. Parvitte, V. Zeninari, G. Liger-Belair, C. Cilindre, Food chemistry 264 pp. 255-262 (2018), http://dx.doi.org/10.1016/j.foodchem.2018.04.094

Development and validation of a diode laser sensor for gas-phase CO2 monitoring above champagne and sparkling wines, A.-L. Moriaux, R. Vallon, C. Cilindre, G. Liger-Belair, B. Parvitte, V. Zeninari, Sensors and Actuators B : chemical 257, pp. 745-752 (2018), http://dx.doi.org/10.1016/j.snb.2017.10.165

2017

Multi-gas sensing with quantum cascade laser array in the mid-infrared region, L. Bizet, R. Vallon, B. Parvitte, M. Brun, G. Maisons, M. Carras, V. Zeninari, Applied Physics B, 123:145 (2017), http://dx.doi.org/10.1007/s00340-017-6716-9

2016

External cavity coherent quantum cascade laser array, R. Vallon, B. Parvitte, L. Bizet, G.M. De Naurois, B. Simozrag, G. Maisons, M. Carras, V. Zéninari, Infrared Physics and Technology, 76, pp. 415-420 (2016), http://dx.doi.org/10.1016/j.infrared.2016.03.013

Photoacoustic detection of methane in large concentrations with a Helmholtz sensor: Simulation and experimentation, V. Zéninari, R. Vallon, C. Risser, B. Parvitte, International Journal of Thermophysics, 37, 1, pp. 1-11 (2016), http://dx.doi.org/10.1007/s10765-015-2018-9

Miniaturized differential Helmholtz resonators for photoacoustic trace gas detection, J. Rouxel, J.-G. Coutard, S. Gidon, O. Lartigue, S. Nicoletti, B. Parvitte, R. Vallon, V. Zéninari, A. Glière, Sensors & Actuators B : Chemical, 236, pp. 1104-1110 (2016), http://dx.doi.org/10.1016/j.snb.2016.06.074

2015

Optimization and complete characterization of a photoacoustic gas detector, C. Risser, B. Parvitte, R. Vallon, V. Zéninari, Applied Physics B, 118, 2, pp. 319-326 (2015), http://dx.doi.org/10.1007/s00340-014-5988-6

Development of a Miniaturized Differential Photoacoustic Gas Sensor, J. Rouxel, J.-G. Coutard, S. Gidon, O. Lartigue, S. Nicoletti, B. Parvitte, R. Vallon, V. Zéninari, A. Glière, Procedia Engineering, 120, pp. 396–399 (2015), http://dx.doi.org/10.1016/j.proeng.2015.08.650

2014

Challenges in the design and fabrication of a lab-on-a-chip photoacoustic gas sensor, A. Glière, J. Rouxel, M. Brun, B. Parvitte, V. Zeninari, S. Nicoletti, Sensors, 14, 1, pp. 957-974 (2014), doi:http://dx.doi.org/10.3390/s140100957

Development of an external-cavity quantum cascade laser spectrometer at 7,5 µm and applications to gas detection, D. Mammez, R. Vallon, B. Parvitte, M.H. Mammez, M. Carras, V. Zeninari, Applied Physics B, 116, 4, pp. 951-958 (2014), doi:http://dx.doi.org/10.1007/s00340-014-5782-5

2013

Quantitative modelization of photoacoustic signal, B. Parvitte, C. Risser, R. Vallon, V. Zeninari, Applied Physics B, 111, 3, pp. 383-389 (2013), doi:http://dx.doi.org/10.1007/s00340-013-5344-2

Photoacoustic gas sensing with a commercial external-cavity quantum cascade laser at 10.5 μm, D. Mammez, C. Stoeffler, J. Cousin, R. Vallon, M.H. Mammez, L. Joly, B. Parvitte, V. Zeninari, Infrared Physics and Technology 61, pp. 14-19 (2013), doi:http://dx.doi.org/10.1016/j.infrared.2013.07.002

A coupled model for the simulation of miniaturized and integrated photoacoustic gas detector, A. Glière, J. Rouxel, B. Parvitte, S. Boutami, V. Zeninari, International Journal of thermophysics 34, 11, pp. 2119-2135 (2013), doi:http://dx.doi.org/10.1007/s10765-013-1534-8

2012

Self-induced pressure shift and temperature dependence measurements of CO₂ at 2.05 micron with a tunable diode laser spectrometer, J. S. Li, G. Durry, J. Cousin, L. Joly, B. Parvitte, V. Zeninari, Spectrochimica Acta Part A, 85, pp. 74-78 (2012), doi:10.1016/j.saa.2011.09.016

Unraveling the evolving nature of gaseous and dissolved carbon dioxide in champagne wines: A state-of-the-art review, from the bottle to the tasting glass, G. Liger-Belair, G. Polidori, V. Zeninari, Analytica Chimica Acta, 732, pp. 1-15 (2012), doi:10.1016/j.aca.2011.10.007

Wavelet denoising for infrared laser spectroscopy and gas detection, I. Mappe-Fogaing, L. Joly, N. Dumelié, J. S. Li, G. Durry, B. Parvitte, V. Zeninari, Applied Spectroscopy, 66, 6, pp. 700-710 (2012), doi:10.1366/11-06459

Carbon dioxide and ethanol release from champagne glasses under standard tasting conditions, G. Liger-Belair, F. Beaumont, M. Bourget, H. Pron, B. Parvitte, V. Zeninari, G. Polidori, C. Cilindre, Advances in Food and Nutrition Research, 67, pp. 289-340 (2012), doi:10.1016/B978-0-12-394598-3.00007-1

2011

Continuous-wave quantum cascade lasers absorption spectrometers for trace gas detection in the atmosphere, L. Joly, V. Zéninari, T. Decarpenterie, J. Cousin, B. Grouiez, D. Mammez, G. Durry, M. Carras, X. Marcadet, B. Parvitte, Laser Physics, 21,4, pp.805-812 (2011), doi:10.1134/S1054660X11070127

Study of a thermophysical system with two time constants using an open photoacoustic cell, B. Bonno, V. Zéninari, L. Joly, B. Parvitte, International Journal of Thermophysics, 32, 3, pp. 630-640 (2011), doi:10.1007/s10765-011-0918-x

Tunable diode laser measurement of pressure-induced shift coefficients of CO₂ around 2.05 micron for Lidar application, J.S. Li, G. Durry, J. Cousin, L. Joly, B. Parvitte, F. Gibert, P.H. Flamant, V. Zéninari, Journal of Quantitative Spectroscopy and Radiative Transfer, 112, 9, pp. 1411-1419 (2011), doi:10.1016/j.jqsrt.2011.01.030

Development of a versatile atmospheric N₂O sensor based on quantum cascade laser technology at 4.5 micron, L. Joly, T. Decarpenterie, N. Dumelié, X. Thomas, I. Mappe-Fogaing, J. Cousin, D. Mammez, R. Vallon, G. Durry ,B. Parvitte, M. Carras, X. Marcadet, V. Zéninari, Applied Physics B, 103, 3, pp. 717-723 (2011), doi:10.1007/s00340-011-4522-3

Comparison of classical, semiclassical and quantum methods in hydrogen broadening of acetylene lines, F. Thibault, S. V. Ivanov, O.G. Buzykin, L. Gomez, M. Dhyne, P. Joubert, M. Lepere, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 112, Issue 9, June 2011, Pages 1429-1437, doi: 10.1016/j.jqsrt.2011.02.011

Comparison of quantum, semiclassical and classical methods in hydrogen broadening of nitrogen lines, L. Gomez, S.V. Ivanov, O.G. Buzykin, F. Thibault, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 112, Issue 12, August 2011, Pages 1942-1949, doi: 10.1016/j.jqsrt.2011.04.005

2010

Photoacoustic spectroscopy for trace gas detection with cryogenic and room-temperature continuous wave quantum cascade lasers, V. Zéninari, A. Grossel, L. Joly, T. Decarpenterie, B. Grouiez, B. Bonno, B. Parvitte, Central European Journal of Physics, 8, 2, pp. 194-201, (2010), doi:10.2478/s11534-009-0042-8

Near infrared diode laser spectroscopy of C₂H₂, H₂O, CO₂ and their isotopologues and the application to TDLAS, a tunable diode laser spectrometer for the Martian PHOBOS-Grunt space mission, G. Durry, J.S. Li, I. Vinogradov, A. Titov, A.V. Kalyuzhny, L. Joly, J. Cousin, T. Decarpenterie, N. Amarouche, M. Liu, B. Parvitte, O. Korablev, M. Gerasimov, V. Zéninari, Applied Physics B, 99, 1, 339-351 (2010), doi:10.1007/s00340-010-3924-y

Pulsed quantum cascade laser spectroscopy with intermediate size pulses: applications to NH3 in the 10 µm region, B. Grouiez, V. Zéninari, L. Joly, B. Parvitte, Applied Physics B, 100, pp. 265-273 (2010), doi:10.1007/s00340-010-399-3-y

Self-broadening coefficients and positions of acetylene around 1.533 micron studied by high-resolution diode laser absorption spectroscopy, J.S. Li, G. Durry, J. Cousin, L. Joly, B. Parvitte, V. Zéninari, Journal of Quantitative Spectroscopy and Radiative Transfer 111, pp. 2332-2340 (2010), doi:10.1016/j.jqsrt.2010.04.025

2009

Inter-comparison of 2µm heterodyne differential absorption lidar, Laser diode spectrometer, LICOR NDIR analyzer and flasks measurements of near-ground atmospheric CO₂ mixing ratio, F. Gibert, L. Joly, I. Xuéref-Rémy, M. Schmidt, A. Royer, P.H. Flamant, M. Ramonet, B. Parvitte, G. Durry, V. Zéninari, Spectrochimica Acta Part A, 71, pp. 1914-1921, (2009), doi:10.1016/j.saa.2008.07.010

Alternative method for gas detection using pulsed quantum cascade laser spectrometers, B. Grouiez, B. Parvitte, L. Joly, V. Zéninari, Optics Letters, 34, pp. 181-183, (2009), doi:10.1364/OL.34.000181

Development of a compact CO₂ sensor based on near-infrared laser technology for enological applications, M. Mulier, V. Zéninari, L. Joly, T. Decarpenterie, B. Parvitte, P. Jeandet, G. Liger-Belair, Applied Physics B, 94, pp. 725-733, (2009), doi:10.1007/s00340-009-3389-z

Laser diode absorption spectroscopy for accurate CO2 line parameters at 2 µm. Consequences for space-based DIAL measurements and potential biase, L. Joly, F. Marnas, F. Gibert, D. Bruneau, B. Grouiez, P.H. Flamant, G. Durry, N. Dumelié, B. Parvitte, V. Zéninari, Applied Optics, 48, pp. 5475-5483, (2009), doi:10.1364/AO.48.005475

Diode laser spectroscopy of two acetylene isotopologues (¹²C₂H₂, ¹³C¹²CH₂) in the 1.533 micrometer region for the PHOBOS-GRUNT space mission, J.S. Li, L. Joly, J. Cousin, B. Parvitte, B. Bonno, V. Zéninari, G. Durry , Spectrochimica Acta Part A, 74, pp. 1204-1208 (2009), doi:10.1016/j.saa.2009.09.037

2008

A case study of CO₂, CO and particles content evolution in the suburban atmospheric boundary layer using a 2-µm Doppler DIAL, a 1-µm backscatter lidar and an array of in situ sensors, F. Gibert, I. Xuéref-Rémy, L. Joly, M. Schmidt, J. Cuesta, K.J. Davis, M. Ramonet, P.H. Flamant, B. Parvitte, V. Zéninari, Boundary-Layer Meteorology, 128, pp. 381-401, (2008), doi:10.1007/s10546-008-9296-8

Quantum cascade laser spectroscopy of N₂O in the 7.9µm region for the in situ monitoring of the atmosphere, A. Grossel, V. Zéninari, B. Parvitte, L. Joly, G. Durry, D. Courtois, Journal of Quantitative Spectroscopy and Radiative Transfer, 109, 10, pp. 1845-1855, (2008), doi:10.1016/j.jqsrt.2007.12.002

Laser diode spectroscopy of the H₂O isotopologues in the 2.64 micron region for the in situ monitoring of the Martian atmosphere, G. Durry, L. Joly, T. Le Barbu, B. Parvitte, V. Zéninari, Infrared Physics and Technology, 51, pp. 229–235, (2008), doi:10.1016/j.infrared.2007.05.004

A complete study of line parameters of CO₂ around 4845 cm-1 for Lidar applications, L. Joly, F. Gibert, B. Grouiez, A. Grossel, B. Parvitte, G. Durry, V. Zéninari, Journal of Quantitative Spectroscopy and Radiative Transfer, 109, 3, pp. 426-434, (2008), doi:10.1016/j.jqsrt.2007.06.003

Comparison of a QCL used in both cw and pulsed mode. Application to the study of SO₂ lines around 9 µm, B. Grouiez, B. Parvitte, L. Joly, D. Courtois, V. Zéninari, Applied Physics B: Lasers and Optics, 90, pp. 177–186 (2008), doi:10.1007/s00340-007-2857-6

Laser diode spectroscopy of H₂O at 2.63 µm for atmosphéric applications, G. Durry, N. Amarouche, L. Joly, X. Liu, B. Parvitte, V. Zéninari, Applied Physics B: Lasers and Optics, 90, pp. 573–580 (2008), doi:10.1007/s00340-007-2884-3

Development of a spectrometer using a cw DFB quantum cascade laser operating at room temperature for the simultaneous analysis of N₂O and CH₄ in the Earth's atmosphere, L. Joly, C. Robert, B. Parvitte, V. Catoire, G. Durry, G. Richard, B. Nicoullaud, V. Zéninari, Applied Optics, 47, pp. 1206–1214 (2008), doi:10.1364/AO.47.001206

2007

Spectrométrie photoacoustique ; Application à l’analyse des gaz, V. Zéninari,Techniques de l’Ingénieur, P2890, pp. 1-11 (2007), doi:http://www.techniques-ingenieur.fr/book/p2890/spectrometrie-photoacoustique-application-a-l-analyse-de-gaz.html

Study of SO₂ line parameters with a quantum cascade laser spectrometer around 1090 cm^-1. Comparison with theoretical calculations of the nu1 and nu1+ nu2 – nu2 bands of ³²SO₂ and the nu1band of ³⁴SO₂, V. Zéninari, L. Joly, B. Grouiez, B. Parvitte, A. Barbe, Journal of Quantitative Spectroscopy and Radiative Transfer, 105, 2,pp. 312-325, (2007), doi:10.1016/j.jqsrt.2006.11.006

Photoacoustic detection of nitric oxide with a Helmholtz resonant quantum cascade laser sensor, A. Grossel, V. Zéninari, B. Parvitte, L. Joly, G. Durry, D. Courtois, Infrared Physics and Technology, 51, pp. 95-101 (2007), doi:10.1016/j.infrared.2006.11.004

Development of a compact CO₂ sensor open to the atmosphere based on near-infrared laser technology at 2.68 μm, L. Joly, B. Parvitte, V. Zéninari, G. Durry, Applied Physics B: Lasers and Optics, 86, 4, pp. 743-748, (2007), doi: 10.1007/s00340-006-2568-4

Optimization of a compact photoacoustic quantum cascade laser spectrometer for atmospheric flux measurements: application to the detection of methane and nitrous oxide, A. Grossel, V. Zéninari, B. Parvitte, L. Joly, D. Courtois, Applied Physics B: Lasers and Optics, 88, pp. 483–492 (2007), doi:10.1007/s00340-007-2719-2

2006

Water vapor isotope ratio measurements in air with a quantum cascade laser spectrometer, L. Joly, V. Zéninari, B. Parvitte, D. Courtois, G. Durry, Optics Letters, 31, 2, pp. 143-145, (2006), doi:10.1364/OL.31.000143

Line strengths and self-broadening coefficients of carbon dioxideisotopologues (¹³CO₂ and ¹⁸O¹²C¹⁶O) near 2.04µm for the in situ lasersensing of the Martian atmosphere, T. Le Barbu, V. Zéninari, B. Parvitte, D. Courtois, G. Durry, Journal of Quantitative Spectroscopy and Radiative Transfer, 98, 2, pp. 264-276, (2006), doi:10.1016/j.jqsrt.2005.05.089

Diode laser spectroscopy of H₂O and CO₂ in the 1.877 µm region for the in situ monitoring of the Martian atmosphere, T. Le Barbu, B. Parvitte, V. Zéninari, I. Vinogradov, O. Korablev, G. Durry, Applied Physics B: Lasers and Optics, 82, 1, pp. 133-140, (2006), doi:10.1007/s00340-005-2020-1

The absorption line profiles of H₂O near 1.39 µm in binary mixtures with N₂, O₂, and H₂ at low pressures, Y.N. Ponomarev, I.V. Ptashnik, V. Zéninari, B. Parvitte, D. Courtois, G. Durry, Optics and Spectroscopy, 100, 5, pp. 682-688, (2006), doi:10.1134/S0030400X06050079

New improvements in methane detection using a Helmholtz resonant photoacoustic laser sensor: a comparison between near-IR diode lasers and mid-IR quantum cascade lasers, A. Grossel, V. Zéninari, L. Joly, B. Parvitte, G. Durry, D. Courtois, Spectrochimica Acta Part A, 63, pp. 1021-1028, (2006) doi:10.1016/j.saa.2005.11.002

A complete study of the line intensities of four bands of CO₂ around 1.6 and 2.0 µm: A comparison between Fourier transform and diode laser measurements, L. Régalia-Jarlot, V. Zéninari, B. Parvitte, A. Grossel, X. Thomas, P. Von Der Heyden, G. Durry, Journal of Quantitative Spectroscopy and Radiative Transfer, 101, 2, pp. 325-336, (2006), doi:10.1016/j.jqsrt.2005.11.021

A spectroscopic study of water vapor isotopologues H₂¹⁶O, H₂¹⁸O and HDO using a continuous wave DFB quantum cascade laser in the 6.7µm region for atmospheric applications, L. Joly, B. Parvitte, V. Zéninari, D. Courtois, G. Durry, Journal of Quantitative Spectroscopy and Radiative Transfer, 102, 2, pp. 129-138, (2006), doi:10.1016/j.jqsrt.2005.11.023

Laboratory spectroscopic calibration of infrared tunable laser spectrometers for the in situ sensing of the Earth and Martian atmospheres, V. Zéninari, B. Parvitte, L. Joly, T. Le Barbu, N. Amarouche, G. Durry, Applied Physics B: Lasers and Optics, 85, pp. 265-272, (2006), doi:10.1007/s00340-006-2331-x

2005

Pressure-broadening coefficients and line strengths of H₂O near 1.39 µm: Application to the in situ sensing of the middle atmosphere with balloonborne diode lasers, G. Durry, V. Zéninari, B. Parvitte, T. Le Barbu, F. Lefèvre, J. Ovarlez, R.R. Gamache, Journal of Quantitative Spectroscopy and Radiative Transfer, 94, 3-4, pp. 387-403, (2005), doi:10.1016/j.jqsrt.2004.09.033

Measurement of thermal properties of gases using an open photoacoustic cell as a sensor, B. Bonno, J.L. Laporte, R.T. D'Leon, Review of Scientific Instruments, 76, 9, pp. 1-4, (2005), doi:10.1063/1.1994898

Determination of polyethylene thermal parameters from photopyroelectric and photoacoustic techniques, B. Bonno, J.L. Laporte, R.T. D'Leon, Instrumentation Science and Technology, 33, 2,pp. 151-160, (2005), doi:10.1081/CI-200048051

2004

In situ sensing of atmospheric CO₂ with laser diodes near 2.05 µm: a spectroscopic study, V. Zéninari, A. Vicet, B. Parvitte, L. Joly, G. Durry, Infrared Physics and Technology, 45, 3, pp. 229-237, (2004), doi:10.1016/j.infrared.2003.11.004

Infrared laser heterodyne systems, B. Parvitte, V. Zéninari, C. Thiébeaux, A. Delahaigue, D. Courtois, Spectrochimica Acta Part A, 60, 5, pp. 1193-1213, (2004), doi:10.1016/j.saa.2003.07.006

Preliminary results of heterodyne detection with quantum cascade lasers in the 9.1 µm region, B. Parvitte, L. Joly, V. Zéninari, D. Courtois, Spectrochimica Acta Part A, 60, pp. 3285-3290, (2004), doi:10.1016/j.saa.2003.12.053

Diode laser spectroscopy of CO₂ in the 1.6 µm region for the in situ sensing of the middle atmosphere, I. Pouchet, V. Zéninari, B. Parvitte, G. Durry, Journal of Quantitative Spectroscopy and Radiative Transfer, 83, pp. 619-628, (2004), doi:10.1016/S0022-4073(03)00108-0

In situ sensing of the middle atmosphere with balloonborne near-infrared laser diodes, G. Durry, N. Amarouche, V. Zéninari, B. Parvitte, T. Le Barbu, J. Ovarlez, Spectrochimica Acta Part A, 60, pp. 3371-3379, (2004), doi:10.1016/j.saa.2003.11.050

Pressure broadening and shift coefficients of H₂O due to perturbation by N₂, O₂, H₂ and He in the 1.39 µm region: experiment and calculations, V. Zéninari, B. Parvitte, D. Courtois, N.N. Lavrentieva, Y.N. Ponomarev, G. Durry, Molecular Physics, 102, pp. 1697-1706, (2004), doi:10.1080/00268970412331287133