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DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS-SERIES B, vol. 5, no. 2, page. 319 - 334, 2005-05

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 244, no. 10, page. 2473 - 2497, 2008-05-15

CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS, vol. 24, no. 4, page. 459 - 477, 2005-12

SIAM Journal on Mathematical Analysis, vol. 44, no. 5, page. 3127 - 3161, 2012-01

Journal of Differential Equations, vol. 261, no. 6, page. 3463 - 3492, 2016-09-15