A TWO RATE DESCRIPTION OF ELECTRON SPIN RESONANCE. APPLICATION TO ONE-DIMENSIONAL MAGNETIC SYSTEMS S. Clément, E. Bize et J. P. RenardJ. Phys. Colloques, 49 C8 (1988) C8-1477-C8-1478DOI: https://doi.org/10.1051/jphyscol:19888679