https://rafyouthstem.org.uk/wp-content/uploads/2019/09/RAF100_History_2_Battle_of_Britain.pdf .
https://fas.org/man/dod-101/ops/docs/97-0609F.pdf .
Contributing to its own defeat: The Luftwaffe and the Battle of Britain: https://www.tandfonline.com/doi/full/10.1080/1470243042000344812