1. Abstract and Concrete Categories;Adámek,1990
2. General Topology I;Arhangel'skii,1990
3. Quotients of textures and of ditopological texture spaces;Brown;Topol. Proc.,2005
4. Ditopological texture spaces and intuitionistic sets;Brown;Fuzzy Sets Syst.,1998
5. Ditopological texture spaces and fuzzy topology, I. Basic concepts;Brown;Fuzzy Sets Syst.,2004