By Jakobsen Per   in Physica Scripta

ISSN:1402-4896|89|9|95502-95511

IOP Publishing‎(2014)‎

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By Jakobsen Per   Lychagin Valentin   in Acta Applicandae Mathematicae

ISSN:0167-8019|82|3|269-308

Springer Publishing Company ‎(2004)‎

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