On the compactness in fuzzy topological spaces in Sostak's sense. Ertürk, Riza; Demirci, Mustafa — 1998 Matematichki Vesnik
Generalization of some fuzzy separation axioms to ditopological texture spaces. Ertürk, Riza; Dost, Şenol; Özçağ, Selma — 2009 The Journal of Nonlinear Sciences and its Applications