Absorption of radiation by gases from low to high pressures. I. Empirical line-by-line and narrow-band statistical models J. M. Hartmann, J. P. Bouanich, C. Boulet et M. SergentJ. Phys. II France, 1 7 (1991) 739-762DOI: https://doi.org/10.1051/jp2:1991107