Web site: Italian 2nd & 9th Army – Invasion of Yugoslavia – 5 April 1941 . 20 July 2013 . Combined Arms Research Library Digital Library . 1997 . Nafziger . George . https://web.archive.org/web/20140322013415/http://www.cgsc.edu/CARL/nafziger/941IDAC.PDF . 2014-03-22 . dead.