Nonlinear Analysis: Theory, Methods & Applications
Nonlinear Analysis > 2009 > 70 > 2 > 830-838
Nonlinear Analysis > 2009 > 70 > 9 > 3362-3370
Nonlinear Analysis > 2009 > 71 > 11 > 5176-5186
Nonlinear Analysis > 2009 > 71 > 12 > 6299-6311
Nonlinear Analysis > 2009 > 71 > 12 > e1858-e1868