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JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 176, no. 1, page. 290 - 314, 2001-10-10

PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION A-MATHEMATICS, vol. 131, page. 1023 - 1037, 2001-01

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 173, no. 2, page. 321 - 355, 2001-07-01

COMPUTERS & MATHEMATICS WITH APPLICATIONS, vol. 35, no. 4, page. 1 - 17, 1998-02

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

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 229, no. 1, page. 24 - 48, 2006-10-01

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 115, no. 2, page. 325 - 349, 1995-01-20

JOURNAL OF DIFFERENTIAL EQUATIONS, vol. 235, no. 1, page. 166 - 198, 2007-04-01

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

ARCHIVE OF RATIONAL MECHANICS AND ANALYSIS, vol. 220, no. 1, page. 155 - 191, 2016-04