On a class of topological spaces containing all bicompact and all connected spaces Šostak, A. — 1977 General topology and its relations to modern analysis and algebra IV
On a fuzzy topological structure Šostak, A. P. — 1985 Proceedings of the 13th Winter School on Abstract Analysis
Stepen' svyaznosti nečetkih množestv v nečetkih topologičeskih prostranstvah A. P. Šostak — 1988 Matematički Vesnik