共 21 条
[1]
Abbas S, 2011, ELECTRON J DIFFER EQ
[3]
[Anonymous], 2004, Math. Sci. Res. J
[4]
[Anonymous], 2017, MODELING ANAL MODERN
[7]
Dhage B. C., 2004, Kyungpook Mathematical Journal, V44, P145
[8]
Dhage B. C., 2005, Electron. J. Qual. Theory Differ. Equ., V2005, P1
[10]
El-Sayed AMA, 2009, ELECTRON J QUAL THEO, P1