1Zhan Qingyi(College of Computer and Information Science,Fujian Agriculture and Forestry University,Fuzhou 350002) Xie Xiangdong(Dept. of Math.,Ningde Teachers College,Ningde 352100,Fujian) Wu Chengqiang(College of Math. and Computer Science,Fuzhou University,Fuzhou 350002).UNIQUENESS OF LIMIT CYCLE FOR A CLASS OF QUARTIC SYSTEM ACCOMPANYING WITH QUADRATIC SYSTEM[J].Annals of Differential Equations,2008,24(2):239-245. 被引量:1