french translation of Scientific American, where I published a paper on celtic knotwork. Featured, in German, in Spektrum der Wissenschaft, Spezial 2 (2006) 46-51 the German subsidiary of Scientific American, in the special issue Ethnomathematics.
http://www.pourlascience.com/index.php?Menu=Dossier&action=1&idn1=21 (...)
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