TY - JOUR AU - L. M. Fridman TI - Application of the Boundary Function Method to Finding Slow Periodic Solutions of Singularly Perturbed Bang-Bang Systems JO - Differencialʹnye uravneniâ PY - 2003 SP - 236 EP - 245 VL - 39 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2003_39_2_a9/ LA - ru ID - DE_2003_39_2_a9 ER -