共 18 条
- [11] Ma TF, 2001, MATH METHOD APPL SCI, V24, P583
- [14] Patcheu S. K., 1997, J DIFFER EQUATIONS, V135
- [15] Pathan M., 1999, J DIFFER EQUATIONS, V154, P5572
- [16] Rivera JEM, 2000, MATH METHOD APPL SCI, V23, P41, DOI 10.1002/(SICI)1099-1476(20000110)23:1<41::AID-MMA102>3.0.CO
- [17] 2-B
- [18] Santos M. L., 2001, ELECT J DIFFERENTIAL, V2001, P1