TY - JOUR AU - M. A. Osipov AU - A. S. Shumovskii TI - Violation of the principle of minimality of the free energy in the self-consistent field approximation for some models of ferroelectrics JO - Teoretičeskaâ i matematičeskaâ fizika PY - 1981 SP - 125 EP - 131 VL - 46 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TMF_1981_46_1_a11/ LA - ru ID - TMF_1981_46_1_a11 ER -