Sylvia B. Encheva. Vague Sets and Closure Systems. In Mingzheng Wang, editor, Knowledge Science, Engineering and Management - 6th International Conference, KSEM 2013, Dalian, China, August 10-12, 2013. Proceedings. Volume 8041 of Lecture Notes in Computer Science, pages 27-35, Springer, 2013. [doi]
Abstract is missing.