S. SIVAKUMAR; T. RAMANATHAN. Group action on contra semi open map and almost contra \(\beta\)-open mapping. Malaya Journal of Matematik, India, v. 8, n. 04, p. 2113–2115, 2020. DOI: 10.26637/MJM0804/0134. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1859. Acesso em: 22 nov. 2024.