TY - JOUR AU - P. A. Mishnaevskii TI - Spectral theory for the Sturm--Liouville equation with an operator coefficient JO - Doklady Akademii Nauk PY - 1975 SP - 534 EP - 537 VL - 222 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1975_222_3_a4/ LA - ru ID - DAN_1975_222_3_a4 ER -