LOZYNSKY, A. O.; DEMKIV, L. I. Stability investigation of systems with unstable subsystem. Part 1. Electrical Engineering and Power Engineering, [S. l.], n. 1, p. 19–29, 2010. DOI: 10.15588/1607-6761-2010-1-2. Disponível em: http://ee.zntu.edu.ua/article/view/93973. Acesso em: 3 may. 2024.