INVESTIGATION OF PHASE TRANSITIONS IN QUASI-TWO-DIMENSIONAL ANTIFERROMAGNETS BY MAGNETIC RESONANCE H. Greb, P. Greiner, H. Sauer, K. H. Strobel et R. Geick J. Phys. Colloques, 49 C8 (1988) C8-1487-C8-1488 DOI: 10.1051/jphyscol:19888684