Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Zhendong Shao and Roger K. Yeh and Kin Keung Poon and Wai Chee Shiu,"The L(2,1)-labeling of K1,n-free graphs and its applications",Applied Mathematics Letters,0893-9659,Elsevier BV,2008-11,21,11,1188-1193,https://cir.nii.ac.jp/crid/1363670320732589824,https://doi.org/10.1016/j.aml.2007.12.020