The circle criterion and Tsypkin’s criterion for systems with several nonlinearities without the use of the \(S\)-procedure. (English. Russian original) Zbl 07878635
Sb. Math. 215, No. 2, 169-182 (2024); translation from Mat. Sb. 215, No. 2, 33-47 (2024).
Reviewer: Nataliya O. Sedova (Ulyanovsk)