1. Jilin |Provincial Institute of Education, Changchun 130020, China;2. Department of Foundation, Aviation University of Air Force, Changchun 130022, China;3. Institute of Mathematics, Jilin University, Changchun 130012, China|4. Department of Applied Mathematics,China University of Petroleum (East China), Dongying 257061, Shandong Province, China
QIAN Mei-Hua, CONG Fu-Zhong, HU Xiao-Jie. Existence of Twin Positive Solutions for Singular SecondOrder Differential Systems[J].J4, 2010, 48(05): 755-760.