TY - JOUR AU - G. Fichera TI - On a unified theory of boundary value problems for elliptic-parabolic equations of second order JO - Matematika PY - 1963 SP - 99 EP - 122 VL - 7 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAT_1963_7_6_a4/ LA - ru ID - MAT_1963_7_6_a4 ER -