模糊图论的一些开创性工作:

Takeda, Eiji. Connectivity in fuzzy graphs. Tech. Rep. Osaka Univ. 23 (1973), 343--352. (美国数学评论上见这是最早的模糊图论文 , 在Elsevier也可搜到很多fuzzy graphs))

Wu, Angela Y.; Rosenfeld, Azriel. SIMD machines and cellular $d$-graph automata. IEEE Trans. Comput. 30 (1981), no. 5, 370--372.

Wu, Angela; Rosenfeld, Azriel. Sequential and cellular graph automata. Inform. Sci. 20 (1980), no. 1, 57--68.

Rosenfeld, Azriel. Fuzzy graphs. Fuzzy sets and their applications to cognitive and decision processes (Proc. U. S.-Japan Sem., Univ. Calif., Berkeley, Calif., 1974), pp. 77--95. Academic Press, New York, 1975.

Yeh, Raymond T.; Bang, S. Y. Fuzzy relations, fuzzy graphs, and their applications to clustering analysis. Fuzzy sets and their applications to cognitive and decision processes (Proc. U. S.-Japan Sem., Univ. Calif., Berkeley, Calif., 1974), pp. 125--149. Academic Press, New York, 1975.

Halpern, Jonathan. Set adjacency measures in fuzzy graphs. J. Cybernet. 5 (1975), no. 4, 77--87 (1976).

Mordeson, John N. Fuzzy line graphs, Pattern Recognition Letters, Vol 14, 1993,381-384(下面3篇John N. Mordeson的论文是他亲自邮寄给我的，我是看到他的下面一篇论文引用北京大学宗传明教授的师兄世界著名图论大师Gert Sabidussi的下面3篇论文才写信和他交流的)

Mordeson, John N.; Nair, Premchand S. Cycles and cocycles of fuzzy graphs. Inform. Sci. 90 (1996), no. 1-4, 39--49.

Mordeson, John N.; Peng, Chang-Shyh. Operations on fuzzy graphs. Inform. Sci. 79 (1994), no. 3-4, 159--170.(这篇论文的10参考文献有北京大学宗传明教授的师兄Gert Sabidussi大师的1962年以前的下面3篇论文-在美国数学评论见Gert Sabidussi在1962年以前一共有9篇论文且全部都是图论的论文；当然John N. Mordeson的这十篇参考文献中还有模糊图论的上面Rosenfeld和Yeh的2篇1975年的开创性论文。我当编委的杂志South Asian Journal of Mathematics最近有一篇同标题的论文:)

即给我寄来论文的John N. Mordeson的上面最后论文引用Gert Sabidussi大师的论文如下:

Sabidussi, Gert. The composition of graphs. Duke Math. J. 26 (1959), 693--696.

Sabidussi, Gert. Graph multiplication. Math. Z. 72 (1959/60), 446--457.

Sabidussi, Gert. The lexicographic product of graphs. Duke Math. J. 28 (1961), 573--578.