Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 5-6 > 2291-2297
Nonlinear Analysis > 2009 > 71 > 11 > 5301-5312
Nonlinear Analysis > 2009 > 71 > 12 > 6265-6275
Nonlinear Analysis > 2009 > 71 > 12 > e550-e559