PDF(149 KB) 
						
						
					
			Backbone Coloring for Triangle-free Planar Graphs
Yue-hua BU, Shui-ming ZHANG
Acta Mathematicae Applicatae Sinica(English Series) ›› 2017, Vol. 33 ›› Issue (3) : 819-824.
						
							PDF(149 KB) 
						
						
					
						
							PDF(149 KB) 
						
						
					Backbone Coloring for Triangle-free Planar Graphs
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