MAGNETIC BEHAVIOR OF THE TWO-DIMENSIONAL ANTIFERROMAGNET BaFeF4 M. EIBSCHÜTZ, L. HOLMES, H. J. GUGGENHEIM and D. E. COX J. Phys. Colloques, 32 C1 (1971) C1-759-C1-760 DOI: 10.1051/jphyscol:19711264