http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Heeresfahrzeuge/Hf__11-13_grosse_Feldkuche/hf__11-13_grosse_feldkuche.html
http://www.landships.info/landships/softskin_articles/Grosse_Feldkuche_Hf13.html
https://honestcooking.com/deutschlicious-meet-the-goulash-cannon/
https://www.carriageassociationofamerica.com/what-is-a-goulash-cannon/
http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Heeresfahrzeuge/Feldsiedekessel_Mod__1936_-r-/feldsiedekessel_mod__1936_-r-.html
http://www.kfzderwehrmacht.de/Homepage_english/Trailers/Heeresfahrzeuge/Feldkuche_M_09_-t-/feldkuche_m_09_-t-.html
http://www.seabeecook.com/equipment/field/kitchen_truck44.htm
http://www.skylighters.org/encyclopedia/m1937.html
https://www.rbth.com/russian-kitchen/328238-wartime-cuisine-soviet-soldiers-eat-wwii
Alex Büchner: The German Infantry Handbook
http://www.dererstezug.com/rations_during_offensive_ops.htm
https://combatgear.blog.hu/2018/11/23/erbswurst