EXPERIMENTAL AND THEORETICAL PHASE DIAGRAMS OF SOME PSEUDO ONE-DIMENSIONAL HEISENBERG ANTIFERROMAGNETS F. Boersma, J.P.A.M. Hijmans, W.J.M. de Jonge and J.M.A. Roos J. Phys. Colloques, 39 C6 (1978) C6-731-C6-732 DOI: 10.1051/jphyscol:19786325