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MATHEMATICA SCANDINAVICA, vol. 103, no. 1, page. 97 - 110, 2008-05

EXPOSITIONES MATHEMATICAE, vol. 21, no. 3, page. 193 - 218, 2003-01

COMPUTING, vol. 85, no. 4, page. 339 - 362, 2009-08

NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS, vol. 24, no. 5, page. 1253 - 1264, 2008-09

JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, vol. 233, no. 4, page. 951 - 968, 2009-12-15

SIAM JOURNAL ON NUMERICAL ANALYSIS, vol. 39, no. 6, page. 1914 - 1937, 2002-04-11