JANUŠKEVIČIUS, Romanas; JANUŠKEVIČIENĖ, Olga. On stability estimations without any conditions of symmetry. Lietuvos matematikos rinkinys, [S. l.], v. 46, n. spec., p. 439–441, 2023. DOI: 10.15388/LMR.2006.30793. Disponível em: https://journals.vu.lt./LMR/article/view/30793. Acesso em: 19 apr. 2025.