摘要:
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sci-hub.se 参考文章(3)
Oystein Ore, Theory of graphs ,(1962)
Michael A. Harrison, A census of finite automata Canadian Journal of Mathematics. ,vol. 17, pp. 100- 113 ,(1965) , 10.4153/CJM-1965-010-9
Frank Harary, Graph theory ,(1969)