High precision saturation spectroscopy of 127I2 with argon lasers at 5 145 Å and 5 017 Å : I — Main resonances Ch. J. Bordé, G. Camy, B. Decomps, J.-P. Descoubes et J. Vigué J. Phys. France, 42 10 (1981) 1393-1411 DOI: 10.1051/jphys:0198100420100139300