EL-Maghrabi, A.I., and F.M. AL-Rehli. “Some Forms of α -Generalized-δ- Compactness”. Journal of Global Research in Mathematical Archives(JGRMA), vol. 1, no. 1, Feb. 2013, pp. 10-18, https://jgrma.com/index.php/jgrma/article/view/12.