TY - JOUR AU - V. A. Sadovnichii AU - V. V. Dubrovskii AU - E. M. Maleko AU - A. Yu. Popov TI - Correctness of Dorodnitsyn's Method for Approximate Calculation of Eigenvalues in a Class of Boundary Value Problems JO - Differencialʹnye uravneniâ PY - 2002 SP - 471 EP - 476 VL - 38 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2002_38_4_a4/ LA - ru ID - DE_2002_38_4_a4 ER -