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Computational Mathematics and Mathematical Physics > 2019 > 59 > 1 > 66-81
Mathematical Notes > 2015 > 98 > 5-6 > 999-1001
Opuscula Mathematica > 2014 > Vol. 34, no. 3 > 601--608
Numerical Analysis and Applications > 2013 > 6 > 3 > 229-235
Journal of Computational Physics > 2011 > 230 > 19 > 7488-7501
Journal of Differential Equations > 2009 > 247 > 5 > 1479-1504
Advances in Mathematics > 2007 > 216 > 1 > 212-254
Demonstratio Mathematica > 1999 > Vol. 32, nr 1 > 41-53
Advances in Computational Mathematics > 1998 > 9 > 1-2 > 97-115