TY - JOUR AU - V. I. Rozhkov AU - M. A. Hekimova TI - A method for studying the periodic solutions of systems of difference and differential-difference equations with small lag JO - Differencialʹnye uravneniâ PY - 1976 SP - 1770 EP - 1780 VL - 12 IS - 10 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1976_12_10_a4/ LA - ru ID - DE_1976_12_10_a4 ER -