SPIN STRUCTURE OF K2CuxM(1-x)F4 (M = Co AND Mn) IN THEIR FERROMAGNETIC PHASE ; FMR MEASUREMENTS I. Yamada, T. Anbe, Y. Yamaguchi et M. Itoh J. Phys. Colloques, 49 C8 (1988) C8-1489-C8-1490 DOI: 10.1051/jphyscol:19888685