Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2014 > 103 > Complete > 9-25
Nonlinear Analysis > 2014 > 110 > Complete > 33-46
Nonlinear Analysis > 2014 > 103 > Complete > 9-25
Nonlinear Analysis > 2014 > 110 > Complete > 33-46