butt (video)" . Batman-news.com. May 8, 2012 . Retrieved June 22, 2012 . ^  a   b   "Two More Go Into 'Dark Knight'" .  Variety . May 23, 2011 . Retrieved May 24, 2011 . ^   Vary, Adam (December 9, 2011).  "Christopher Nolan on 'The Dark Knight Rises' IMAX