Hyperfine interactions in homonuclear diatomic molecules and u-g perturbations. II. Experiments on I2 J.P. Pique, F. Hartmann, S. Churassy et R. Bacis J. Phys. France, 47 11 (1986) 1917-1929 DOI: 10.1051/jphys:0198600470110191700