TY - JOUR AU - V. A. Malovichko TI - The first boundary value problem for a fourth-order equation with a nonnegative characteristic form JO - Differencialʹnye uravneniâ PY - 1983 SP - 712 EP - 714 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_4_a26/ LA - ru ID - DE_1983_19_4_a26 ER -