TY - JOUR AU - B. F. Bylov AU - È. A. Tikhonova TI - The exponents of a piecewise-constant three-dimensional system JO - Differencialʹnye uravneniâ PY - 1987 SP - 1483 EP - 1497 VL - 23 IS - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1987_23_9_a1/ LA - ru ID - DE_1987_23_9_a1 ER -