TY - JOUR AU - A. B. Budak TI - Some properties of eigenfunctions of a fourth-order differential operator with discontinuous coefficients JO - Differencialʹnye uravneniâ PY - 1980 SP - 1943 EP - 1955 VL - 16 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1980_16_11_a3/ LA - ru ID - DE_1980_16_11_a3 ER -