AFMR AND SUBTHRESHOLD TWO-MAGNON ABSORPTION IN QUASI-ONE-DIMENSIONAL ANTIFERROMAGNET CsMnCl3, 2H2O A.G. Anders, A.I. Zvyagin, Yu.V. Pereverzev, A.I. Petutin et A.A. Stepanov J. Phys. Colloques, 39 C6 (1978) C6-739-C6-740 DOI: 10.1051/jphyscol:19786329