06103252

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06103252 Su, Li Li, Hong-Hai Zheng, Liu-Rong The Laplacian spectrum of some digraphs obtained from the wheel. Discuss. Math., Graph Theory 32, No. 2, 255-261 (2012). 2012 University of Zielona G\'ora Press, Zielona G\'ora EN digraph Laplacian matrix eigenvalue wheel