中国科学院数学与系统科学研究院期刊网
JSSC
A CRITERION FOR DISCRETE SPECTRUM OF A CLASS OF DIFFERENTIAL OPERATORS
Guang Sheng WEI
A CRITERION FOR DISCRETE SPECTRUM OF A CLASS OF DIFFERENTIAL OPERATORS
Guang Sheng WEI
Journal of Systems Science and Complexity . 2003, (1): 95 -100 .