Hadi, Mustafa Hasan. β€œWEAK SEPARATION AXIOMS VIA π‘«πŽ, π‘«πœΆβˆ’πŽ, π‘«π’‘π’“π’†βˆ’πŽ, π‘«π’ƒβˆ’πŽ, AND π‘«πœ·βˆ’πŽ -SETS”. European Scientific Journal, ESJ 9, no. 21 (July 12, 2013). Accessed February 12, 2026. https://eujournal.org/index.php/esj/article/view/1428.