中国科学院数学与系统科学研究院期刊网
LOWER BOUND OF THE SUM OF POSITIVEEIGENVALUES OF A GRAPH
李炯生王新茂
LOWER BOUND OF THE SUM OF POSITIVE EIGENVALUES OF A GRAPH
LI JIONGSHENG;WANG XINMAO
应用数学学报 . 1998, (4): 0 -0 .  DOI: 10.12387/C1998133