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Author: Su, Guifu

• An, Mingqiang; Lai, Hong-Jian; Li, Hao; Su, Guifu; Tian, Runli; Xiong, Liming: Two operations on a graph preserving the (non)existence of 2-factors in its line graph. (English). Czechoslovak Mathematical Journal, vol. 64 (2014), issue 4, pp. 1035-1044