SPECIFIC HEAT OF THE TWO-DIMENSIONAL SPIN-1/2 HEISENBERG FERROMAGNET P. BLOEMBERGEN, K. G. TAN, F. H.J. LEFEVRE et A. H.M. BLEYENDAALJ. Phys. Colloques, 32 C1 (1971) C1-878-C1-879DOI: https://doi.org/10.1051/jphyscol:19711310
