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Akram, Muhammad Bipolar fuzzy graphs. (English) Zbl 1239.05156 Inf. Sci. 181, No. 24, 5548-5564 (2011). MSC: 05C72 PDF BibTeX XML Cite \textit{M. Akram}, Inf. Sci. 181, No. 24, 5548--5564 (2011; Zbl 1239.05156) Full Text: DOI OpenURL
Akram, Muhammad; Dudek, Wieslaw A. Interval-valued fuzzy graphs. (English) Zbl 1211.05133 Comput. Math. Appl. 61, No. 2, 289-299 (2011). MSC: 05C72 PDF BibTeX XML Cite \textit{M. Akram} and \textit{W. A. Dudek}, Comput. Math. Appl. 61, No. 2, 289--299 (2011; Zbl 1211.05133) Full Text: DOI arXiv OpenURL