His dissertation from 2002 about the secret stay behind defense organisation was published in English. Link to library description: swisscovery.slsp.ch/discovery/fulldisplay?docid=alma991065329539705501&context=L&vid=41SLSP_NETWORK:VU1_UNION&lang=en&search_scope=DN_and_CI&adaptor=Local%20Search%20Engine&tab=41SLSP_NETWORK&query=any,contains,daniele%20ganser&pfilter=rtype,exact,dissertations&offset=0
The trade edition was published by Frank Cass (now tandf) in 2005, also in English. Link to publisher [search with "daniele ganser"]: www.tandfonline.com/action/doSearch?text1=%22daniele+ganser%22&Ppub=&startPage=&pageSize=50 another try: www.tandfonline.com/action/doSearch?AllField=%22nato%27s+secret+armies%22&startPage=&pageSize=50
His other books and lectures are in German and translated into ... .