Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 5-6 > 1636-1648
Nonlinear Analysis > 2009 > 71 > 9 > 3999-4006
Nonlinear Analysis > 2009 > 71 > 12 > e2696-e2704
Nonlinear Analysis > 2009 > 71 > 12 > 6011-6018
Nonlinear Analysis > 2009 > 71 > 12 > e1139-e1152