Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 7-8 > 3053-3062
Nonlinear Analysis > 2009 > 71 > 7-8 > 2660-2666
Nonlinear Analysis > 2009 > 71 > 7-8 > 3053-3062
Nonlinear Analysis > 2009 > 71 > 7-8 > 2660-2666