
Bounds on the Lewin Number for Primitive Non-powerful Signed Digraphs
YOU Lihua, LIU Muhuo, LIU Bolian
Acta Mathematicae Applicatae Sinica ›› 2012, Vol. 0 ›› Issue (3) : 396-407.
Bounds on the Lewin Number for Primitive Non-powerful Signed Digraphs
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