https://www.jstor.org/stable/pdf/488278.pdf?seq=1
https://www.amazon.com/History-Last-Things-Before/dp/1558760806
https://transcript.degruyter.com/view/book/9783839406816/10.14361/9783839406816-005.xml
https://film-history.org/issues/text/kracauers-theory-history-and-film (Gertrud Koch, 2018-11-23)