1. Adamek J, Herrlich H, Strecker GE (1990) Abstract and concrete categories: the joy of cats, Wiley Interscience Pure and Applied Mathematics, Wiley, Brisbane
2. Atanassov KT, Stoeva S (1983) Intuitionistic fuzzy sets. Polish symposium on interval and fuzzy mathematics, Poznan, pp 23–26
3. Bayoumi F (2000) The α-levels of a fuzzy uniform structure and of a fuzzy proximity. Fuzzy Sets Syst 116:421–428
4. Bayoumi F (2003) On initial and final uniform structures. Fuzzy Sets Syst 133:299–319
5. Byhan S, Çocker D (2005) Pairwise separation axioms in intuitionistic topological spaces. Hacettepe J Math Stat 34(, 101–114):34S, 101–114