Lellis Thivagar, M., Athisaya Ponmani, S., Raja Rajeswari, R., & Ekici, E. (2008). On Some Bitopological 𝛾-Separation Axioms. CUBO, A Mathematical Journal, 10(3), 137–144. Retrieved from https://cubo.ufro.cl/ojs/index.php/cubo/article/view/1506