TY - JOUR AU - D. G. Rakhimov AU - Yu. B. Rusak TI - Some special cases of the use of the method of false perturbations JO - Differencialʹnye uravneniâ PY - 1983 SP - 1813 EP - 1815 VL - 19 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1983_19_10_a25/ LA - ru ID - DE_1983_19_10_a25 ER -