KAVALIAUSKAS, Algis. Determination of an unstability area of a system by using the expansion of a n-th order determinant by k-th order determinants. Lietuvos matematikos rinkinys, [S. l.], v. 41, n. spec., p. 200–205, 2001. DOI: 10.15388/LMR.2001.34434. Disponível em: https://www.journals.vu.lt/LMR/article/view/34434.. Acesso em: 16 aug. 2024.