INFRARED PHOTOACOUSTIC SPECTROMETER AND DATA ANALYSIS FOR HETEROGENEOUS OR LIQUID SAMPLES G. Rousset, J. P. Monchalin et L. BertrandJ. Phys. Colloques, 44 C6 (1983) C6-165-C6-170DOI: https://doi.org/10.1051/jphyscol:1983625