Osservazioni
http://mak.at/en/program/event?article_id=814&event_id=1337668286587 "HANS NEUMANN. Pioneer of Advertising Agencies", edited by Peter Noever, with contributions by Eva Flicker, Peter Klinger, Kathrin Pokorny-Nagel, Alexandra Smetana, MAK Studies 14, German/English, 125 pages, MAK Vienna 2008.