[1] Aygün, H., Abbas, S. E.: 
Some good extensions of Šostak's L-fuzzy topology. Hacet. J. Math. Stat. 36 (2007), 115-125. 
MR 2411629 
[3] Chakraborty, M. K., Ahsanullah, T. M. G.: 
Fuzzy topology on fuzzy sets and tolerance topology. Fuzzy Sets Syst. 45 (1992), 103-108. 
MR 1148457 | 
Zbl 0754.54004 
[5] Chaudhuri, A. K., Das, P.: 
Some results on fuzzy topology on fuzzy sets. Fuzzy Sets Syst. 56 (1993), 331-336. 
MR 1227903 | 
Zbl 0794.54012 
[6] Demirici, M.: 
On several types of compactness in smooth topological spaces. Fuzzy Sets Syst. 90 (1997), 83-88. 
MR 1460342 
[7] Demirici, M.: 
Neighborhood structures of smooth topological spaces. Fuzzy Sets Syst. 92 (1997), 123-128. 
MR 1481022 
[8] Demirici, M.: 
Three topological structures of smooth topological spaces. Fuzzy Sets Syst. 101 (1999), 185-190. 
MR 1658916 
[9] Gayyar, M. K. El, Kerre, E. E.: 
Almost compactness and near compactness in smooth topological spaces. Fuzzy Sets Syst. 62 (1994), 193-202. 
MR 1274998 | 
Zbl 0833.54007 
[10] Alla, M. A. Fath, Mahmoud, F. S.: 
Fuzzy topology on fuzzy sets, functions with fuzzy closed graphs, strong fuzzy closed graphs. J. Fuzzy Math. 9 (2001), 525-533. 
MR 1859535 
[11] Guido, C.: 
Powerset operators based approach to fuzzy topologies on fuzzy sets, topological and algebraic structures in fuzzy sets. A handbook of recent developments in the Mathematics of fuzzy sets S. E. Rodabaugh and E. P. Klement Trends Log. Stud. Log. Libr., vol. 20, Kluwer Academic Publishers, Dordrecht (2003), 401-413. 
MR 2046750 
[12] Hazra, R. N., Samanta, S. K., Chattopadhyay, K. C.: 
Fuzzy topology redefined. Fuzzy Sets Syst. 45 (1992), 79-82. 
MR 1148454 | 
Zbl 0756.54002 
[14] Höhle, U., (eds.), S. E. Rodabaugh: 
Mathematics of fuzzy Sets: Logic, Topology, and Measure Theory. Kluwer Academic Publishers, Dordrecht (1999). 
MR 1788899 | 
Zbl 0942.00008 
[15] Höhle, U., Šostak, A. P.: 
A general theory of fuzzy topological spaces. Fuzzy Sets Syst. 73 (1995), 131-149. 
MR 1355360 | 
Zbl 0948.54003 
[16] Höhle, U., Šostak, A. P.: 
Axiomatic foundations of fixed-basis fuzzy topology. Mathematics of fuzzy Sets: Logic, Topology, and Measure Theory U. Höhle, S. E. Rodabaugh Kluwer Academic Publishers, Dordrecht (1999), 123-272. 
MR 1788903 | 
Zbl 0977.54006 
[17] Kubiak, T.: On fuzzy topologies. Ph.D. thesis, Adam Mickiewicz University. Poznań, Poland (1985).
[19] Kubiak, T., Šostak, A. P.: 
Foundations of the theory of $(L,M)$-fuzzy topological spaces. Abstracts of the 30th Linz Seminar on Fuzzy Set Theory U. Bodenhofer, B. De Baets, E. P. Klement, S. Saminger-Platz Johannes Kepler Universität, Linz (2009), 70-73. 
MR 2819393 
[21] Peeters, W.: 
Subspaces of smooth fuzzy topologies and initial smooth fuzzy structures. Fuzzy Sets Syst. 104 (1999), 423-433. 
MR 1692338 | 
Zbl 0944.54004 
[22] Rodabaugh, S. E.: 
Categorical foundations of variable-basis fuzzy topology. Mathematics of fuzzy Sets: Logic, Topology, and Measure Theory U. Höhle, S. E. Rodabaugh Kluwer Academic Publishers, Dordrecht (1999), 273-388. 
MR 1788904 
[23] Rodabaugh, S. E.: 
Powerset operator foundations for Poslat fuzzy set theories and topologies. Mathematics of fuzzy Sets: Logic, Topology, and Measure Theory U. Höhle, S. E. Rodabaugh Kluwer Academic Publishers, Dordrecht (1999), 91-116. 
DOI 10.1007/978-1-4615-5079-2_3 | 
MR 1788901 | 
Zbl 0974.03047 
[24] Ramadan, A. A., Alla, M. A. Fath, Abbas, S. E.: 
Smooth fuzzy topology on fuzzy sets. J. Fuzzy Math. 10 (2002), 59-68. 
MR 1894600 
[25] Roopkumar, R., Kalaivani, C.: 
Continuity of fuzzy proper function on Šostak's $I$-fuzzy topological spaces. Commun. Korean Math. Soc. 26 (2011), 305-320. 
DOI 10.4134/CKMS.2011.26.2.305 | 
MR 2816568 
[26] Šostak, A. P.: 
On a fuzzy topological structure. Rend. Circ. Matem. Palermo Ser. II. 11 (1985), 89-103. 
MR 0897975 
[27] Srivastava, R.: 
On separation axioms in a newly defined fuzzy topology. Fuzzy Sets Syst. 62 (1994), 341-346. 
MR 1276601 | 
Zbl 0833.54006