[1]
Y. Y. Yousif and N. S. Jassim, “IJ--Perfect Functions Between Bitopological Spaces”, IHJPAS, vol. 23, no. 2, pp. 135–140, May 2017, Accessed: Sep. 17, 2024. [Online]. Available: https://jih.uobaghdad.edu.iq/index.php/j/article/view/950