Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 3-4 > 1235-1249
Nonlinear Analysis > 2011 > 74 > 17 > 5833-5843
Nonlinear Analysis > 2009 > 71 > 3-4 > 1235-1249
Nonlinear Analysis > 2011 > 74 > 17 > 5833-5843