TY - CHAP AU - Slawny, J. TI - Phase transitions in ferromagnetic spin systems at low temperatures BT - International conference on dynamical systems in mathematical physics AU - Collectif T3 - Astérisque PY - 1976 SP - 181 EP - 182 IS - 40 PB - Société mathématique de France UR - http://www.numdam.org/item/AST_1976__40__181_0/ LA - en ID - AST_1976__40__181_0 ER -