TY - JOUR AU - L. K. Kuz'mina TI - On simplified models in dynamics of some singularly perturbed systems JO - Matematičeskoe modelirovanie PY - 1989 SP - 103 EP - 109 VL - 1 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MM_1989_1_8_a7/ LA - ru ID - MM_1989_1_8_a7 ER -