The journal contained both theoretical and practical contributions, with the intervention of creators who defined and illustrated their artistic strategies. Directly linked to the most prominent figures in the Düsseldorf Kunstacademie, such as Joseph Beuys, Jorg Immendorf and Sigmar Polke, it also boasted the involvement of the most spirited and reflexive artists of the times, from Vito Acconci and Marcel Broodthaers to Bruce Nauman and Dieter Roth. Interfunktionen, as its name indicates, was an inter-disciplinary publication, open to all artistic genres and with no restrictions as to media. This book is produced in collaboration with Fritz Heubach, the review's first editor, and depicts the experience of those years by means of original documents--some of them hitherto unpublished--artworks, and artists' writings.