1. |
A. V. Lipatov, F. R. Sadykov, G. Ya. Soloveĭchik, “Graphic methods of investigation of the stability of continuous systems with one nonlinearity of different classes”, Avtomat. i Telemekh., 1985, no. 3, 28–35 ; Autom. Remote Control, 46:3 (1985), 300–306 |