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1
Journal of numerical mathematics, 28 (2020) 3, S. 131–146
...Computational Science and Mathematical Methods...
Published on 2020-07-25. Available in OpenAccess from 2021-07-25.  Published on 2020-07-25. Available in OpenAccess from 2021-07-25. 
2
Journal of numerical mathematics, 27 (2019) 4, S. 203 - 214
...Computational Science and Mathematical Methods...
Published on 2019-12-31. Available in OpenAccess from 2020-12-31.  Published on 2019-12-31. Available in OpenAccess from 2020-12-31.