http://www.passion-cinema.com/hail-caesar-carter-burwell-parle-des-films-dans-le-film-des-freres-joel-et-ethan-coen,6009/
http://blogs.indiewire.com/theplaylist/coen-brothers-hail-caesar-will-have-musical-comedy-elements-but-is-actually-rather-serious-20150422
http://www.hollywoodreporter.com/news/coen-brothers-hail-caesar-new-790580