TY - JOUR AU - B. V. Loginov TI - Variational methods in bifurcation theory under conditions of group invariance JO - Differencialʹnye uravneniâ PY - 1979 SP - 1710 EP - 1712 VL - 15 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1979_15_9_a19/ LA - ru ID - DE_1979_15_9_a19 ER -