TY - JOUR AU - A. A. Stakun TI - Trace formulas for a singular differential operator with a turning point JO - Differencialʹnye uravneniâ PY - 1985 SP - 636 EP - 646 VL - 21 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1985_21_4_a10/ LA - ru ID - DE_1985_21_4_a10 ER -