TY - JOUR AU - A. V. Borovskikh TI - Investigation of Relaxation Oscillations with the Use of Constructive Nonstandard Analysis: I JO - Differencialʹnye uravneniâ PY - 2004 SP - 291 EP - 298 VL - 40 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2004_40_3_a0/ LA - ru ID - DE_2004_40_3_a0 ER -