TY - JOUR AU - N. M. Ivochkina TI - The Dirichlet principle in the theory of equations of Monge–Ampère type JO - Algebra i analiz PY - 1992 SP - 131 EP - 156 VL - 4 IS - 6 UR - http://geodesic.mathdoc.fr/item/AA_1992_4_6_a6/ LA - ru ID - AA_1992_4_6_a6 ER -