Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 71 > 12 > e1408-e1412
Nonlinear Analysis > 2009 > 71 > 12 > e2276-e2287
Nonlinear Analysis > 2009 > 71 > 12 > e1408-e1412
Nonlinear Analysis > 2009 > 71 > 12 > e2276-e2287