ГАВРИЛКІВ, Володимир Михайлович. MONOTONE FAMILIES ON CYCLIC SEMIGROUPS. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY. Number, [S. l.], n. 1(17), p. 102–112, 2019. Disponível em: https://pvntsh.nung.edu.ua/index.php/number/article/view/236. Acesso em: 11 apr. 2025.