e All articles: http://www.zyen.com/publications/professional-articles.html?Au=hors=mainelli Personal blog: mainelli.org [1] <x-msg://5/#_ftnrefl> W. Wiithrich, "Cooperative Principles and =omplementary Currency," Current Issues (Zeit-Fragen), =rticle 1: topical questions # 30, August 9, 2004, 1, translated