TY - JOUR AU - A. T. Taldykin AU - E. A. Isakova TI - Approximations and expansions of solutions of linear boundary value problems with parameters JO - Differencialʹnye uravneniâ PY - 1987 SP - 2014 EP - 2017 VL - 23 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_11_a26/ LA - ru ID - DE_1987_23_11_a26 ER -