http://www.photoeye.com/bookstore/citation.cfm?Catalog=dp946
◇ Klaus Mettig - DON'T BE LEFT BEHIND - nGbK
http://ngbk.de/development/index.php?option=com_content&view=article&id=30:klaus-mettig-donat-be-left-behind-v15-30&catid=11:exhibitions&Itemid=315&lang=en