TY - JOUR AU - T. I. Lanina TI - The strong solvability of a certain boundary value problem for an equation of mixed type with two parallel lines of degeneracy JO - Differencialʹnye uravneniâ PY - 1975 SP - 100 EP - 107 VL - 11 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1975_11_1_a11/ LA - ru ID - DE_1975_11_1_a11 ER -