TY - JOUR AU - V. A. Kamenetskiy TI - The circle criterion and Tsypkin's criterion for systems with~several nonlinearities without the use of the $S$-procedure JO - Sbornik. Mathematics PY - 2024 SP - 169 EP - 182 VL - 215 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2024_215_2_a2/ LA - en ID - SM_2024_215_2_a2 ER -