TY - JOUR AU - E. G. D'yakonov TI - Regular Perturbations of Nonstationary Problems of Mathematical Physics Related to Linear Constraints: I JO - Differencialʹnye uravneniâ PY - 2001 SP - 55 EP - 65 VL - 37 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2001_37_1_a7/ LA - ru ID - DE_2001_37_1_a7 ER -