Laplacian spectral characterizations of some classes of multi-cyclic graphs
ZHAI Ruonan, WANG Ligong, DONG Zhanpeng, WANG Zhanqing, MEI Ruoxing
Operations Research Transactions . 2016, (2): 59 -68 .  DOI: 10.15960/j.cnki.issn.1007-6093.2016.02.005