THE WAVELENGTH-RATIO METHOD : A NOVEL APPROACH TO EXTINCTION-FREE DETERMINATION OF FM/FN J. P. Guigay, M. Schlenker et J. BaruchelJ. Phys. Colloques, 43 C7 (1982) C7-107-C7-111DOI: https://doi.org/10.1051/jphyscol:1982716
