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Journal of Dynamics and Differential Equations > 2012 > 24 > 1 > 13-28
Journal of Differential Equations > 2010 > 249 > 5 > 1035-1055
Nonlinear Differential Equations and Applications NoDEA > 2008 > 15 > 3 > 309-334
Nonlinear Analysis > 2007 > 66 > 7 > 1600-1616