TY - JOUR AU - V. S. Ermolin AU - T. V. Vlasova TI - Lyapunov's first method: estimates of characteristic numbers of functional matrices JO - Vestnik Sankt-Peterburgskogo universiteta. Prikladnaâ matematika, informatika, processy upravleniâ PY - 2019 SP - 442 EP - 456 VL - 15 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VSPUI_2019_15_4_a2/ LA - en ID - VSPUI_2019_15_4_a2 ER -