ARTEMOVYCH, O.D.; LUKASHENKO, M.P. On rigid derivations in rings. Carpathian Mathematical Publications, [S. l.], v. 6, n. 2, p. 181–190, 2014. DOI: 10.15330/cmp.6.2.181-190. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1349. Acesso em: 6 may. 2024.