Department of Applied Mathematics, Xidian University, Xi’an 710071, China
2.Department of Mathematics, Yangtze University, Jingzhou 434104, China
Online:2003-10-06
Published:2003-10-06
Supported by:
Supported by Sci-tech Innovation Project of Educational Department of Hubei
Province; Major Project of Educational Department of Hubei Province (2003A005).
Supported by Sci-tech Innovation Project of Educational Department of Hubei
Province; Major Project of Educational Department of Hubei Province (2003A005).