MAGNETIC FIELD INDUCED FIRST-ORDER TRANSITIONS IN DYSPROSIUM ORTHOFERRITE V. V. Eremenko, S. L. Gnatchenko, N. F. Kharchenko, P. P. Lebedev, K. Piotrowski, H. Szymczak and R. Szymczak J. Phys. Colloques, 49 C8 (1988) C8-919-C8-920 DOI: 10.1051/jphyscol:19888418