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JOURNAL OF NONLINEAR SCIENCE, vol. 25, no. 2, page. 315 - 342, 2015-04

COMMUNICATIONS IN MATHEMATICAL SCIENCES, vol. 7, no. 1, page. 189 - 209, 2009-03

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 232, no. 2, page. 487 - 520, 2007-01-15

NONLINEAR ANALYSIS-THEORY METHODS & APPLICATIONS, vol. 139, page. 75 - 105, 2016-07

DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, vol. 21, no. 10, page. 3479 - 3514, 2016-12