TY - JOUR AU - T. N. Vankova AU - L. V. Detchenya AU - V. M. Petsevich AU - A. O. Seliverstova TI - On a class of systems of second order differential equations without mobile critical features JO - Problemy fiziki, matematiki i tehniki PY - 2018 SP - 62 EP - 65 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PFMT_2018_4_a10/ LA - ru ID - PFMT_2018_4_a10 ER -