Search results for: Junfeng Xu
Advances in Difference Equations > 2017 > 2017 > 1 > 1-9
Archiv der Mathematik > 2009 > 92 > 6 > 593-601
Advances in Difference Equations > 2017 > 2017 > 1 > 1-9
Archiv der Mathematik > 2009 > 92 > 6 > 593-601