Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 7-8 > 2585-2599
Nonlinear Analysis > 2009 > 71 > 7-8 > 2840-2846
Nonlinear Analysis > 2009 > 71 > 7-8 > 2585-2599
Nonlinear Analysis > 2009 > 71 > 7-8 > 2840-2846