DARBINYAN, S. K. On pre-Hamiltonian Cycles in Balanced Bipartite Digraphs. Mathematical Problems of Computer Science, [S. l.], v. 46, p. 7–17, 2021. Disponível em: http://www.mpcs.sci.am/index.php/mpcs/article/view/142. Acesso em: 1 may. 2025.