TY - JOUR AU - L. K. Astaf'eva TI - A nonlinear boundary value problem for an equation of mixed type JO - Trudy seminara po kraevym zadačam PY - 1984 SP - 32 EP - 39 VL - 21 IS - 21 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KUKZ_1984_21_21_a3/ LA - ru ID - KUKZ_1984_21_21_a3 ER -