Laukkala, Tanja, Eero Pukkala, Bruce Budowle, Antti Sajantila, Matti Mäntysaari, Heini Huhtala, and Alpo Vuorio. “Previous Military Pilots and Their Later Fatal Civil Aviation Accidents”. Aviation 25, no. 3 (October 28, 2021): 182-186. Accessed April 27, 2024. https://journals.vilniustech.lt/index.php/Aviation/article/view/15660.