TY  - JOUR
AU  - S. A. Pirogov
TI  - Phase transitions of the first kind for spin models with a spin that assumes the values $-1$, $0$, $1$
JO  - Doklady Akademii Nauk
PY  - 1974
SP  - 1273
EP  - 1275
VL  - 214
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1974_214_6_a9/
LA  - ru
ID  - DAN_1974_214_6_a9
ER  -