More on intuitionistic fuzzy sets
Continuing earlier papers on intuitionistic fuzzy sets [e.g., the author, ibid. 20, 87--96 (1986; Zbl 0631.03040); the author and \textit{G. Gargov}, ibid. 31, 343--349 (1989; Zbl 0674.03017)] the author introduces modality-like operators as well as versions of level sets and proves some elementary consequences of these definitions.
scientific article; zbMATH DE number 4121988