[1] Bondy J A, Murty U S R. Graph theory with application [M].London:Macmillan Press, 1976.
[2] Liu Guizhen.(g, f)-factors and factorizations of graphs [J]. Acta Math Sinica, 1994, 37(2):230-237.
[3] Wang Changping. Several new results for k-deleted graphs [J]. Acta Mathematics Scientia, 1998, 18(3):302-309.(in Chinese)
[4] Qian Jianbo. Degree conditions and the existence of k-factors in a bipartite graph [J]. Mathematics Applicata, 2000, 13(1):66-69.(in Chinese)
[5] Chen Ciping. Neighborhood conditions for factors in graphs [J]. Mathematics Applicata, 1992, 5(3):47-52.
[6] Ore O. Theory of graphs [M].American Mathematics Society College Publishers, 1962.