Alexander P. \v{S}ostak, \emph{Fuzzy functions and an extension of the category $L$-Top of Chang-Goguen $L$-topological spaces}, Proceedings of the Ninth Prague Topological Symposium (Prague, 2001), Topology Atlas, Toronto, 2002, pp. 271--294. arXiv:math.GN/0204139 @incollection {math.GN/0204139, author = {\v{S}ostak, Alexander P.}, title = {Fuzzy functions and an extension of the category $L$-Top of {C}hang-Goguen $L$-topological spaces}, pages = {271--294}, booktitle = {Proceedings of the Ninth Topological Symposium (Prague, 2001)}, publisher = {Topology Atlas}, address = {Toronto}, year = {2002}, editor = {Petr Simon}, arxivnumber = {math.GN/0204139}, note = {arXiv:math.GN/0204139}, mrclass = {03E72 18A05 54A40}, }