DOPPLER-FREE CONJUGATE EMISSION IN RESONANT GAS MEDIA : LINESHAPE, POLARIZATION PROPERTIES AND SATURATION D. Bloch, R. K. Raj, K. S. Peng et M. DucloyJ. Phys. Colloques, 44 C2 (1983) C2-101-C2-111DOI: https://doi.org/10.1051/jphyscol:1983215