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This is an update request for the document Hyperquaternions: A New Tool for Physics by Patrick R. Girard, Patrick Clarysse, Romaric Pujol, Robert Goutte and Philippe Delachartre

Your paper was deposited in MUCC (Crossref) and appears online at http://link.springer.com/content/pdf/10.1007/s00006-018-0881-8.pdf
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