USTIMENKO, V.; PUSTOVIT, O. On extremal algebraic graphs, Eulerian transformations and implementations of multivariate cryptosystems. Environmental safety and natural resources, [S. l.], v. 58, n. 2, p. 135–153, 2026. DOI: 10.32347/2411-4049.2026.2.135-153. Disponível em: https://es-journal.in.ua/article/view/364963. Acesso em: 17 jun. 2026.