TY - JOUR AU - V. I. Mironenko TI - A method that allows one to determine the initial data of periodic solutions of differential systems and to compare the mappings for a period JO - Differencialʹnye uravneniâ PY - 1980 SP - 1985 EP - 1994 VL - 16 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1980_16_11_a8/ LA - ru ID - DE_1980_16_11_a8 ER -