Martуnуuk А. А.; Kоzubоvskауa I. G. On sufficient conditions of stability for systems with constantly acting disturbances. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 23, n. 3, p. 405–410, 1971. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8571. Acesso em: 6 dec. 2025.