TWO MAGNON ABSORPTION AND MAGNON SIDEBAND IN K2NiF4 TYPE ANTIFERROMAGNETS H. KAMIMURA, N. SUZUKI et S. WATARAIJ. Phys. Colloques, 32 C1 (1971) C1-1055-C1-1057DOI: https://doi.org/10.1051/jphyscol:19711379
