・参考文献
COW 37 mm gun - Wikipedia
en.wikipedia.org
Airco DH.4 - Wikipedia
en.wikipedia.org
Westland Westbury - Wikipedia
en.wikipedia.org
Flying Guns
An aviation history website
flying-guns.com
A description of no allowance sighting and shooting.
www.dingeraviation.net
Bristol Bagshot - Wikipedia
en.wikipedia.org
https://www.baesystems.com/en/heritage/bristol-95-bagshot
www.baesystems.com
Westland C.O.W. Gun Fighter - Wikipedia
en.wikipedia.org
Westland Interceptor - Wikipedia
en.wikipedia.org
Vickers Type 161 - Wikipedia
en.wikipedia.org
Littlejohn adaptor - Wikipedia
en.wikipedia.org
https://www.quarryhs.co.uk/sgun.htm
www.quarryhs.co.uk
https://www.quarryhs.co.uk/sgun.jpg
https://www.quarryhs.co.uk/37-40mm.htm
www.quarryhs.co.uk
https://www.quarryhs.co.uk/cannon_pioneers.htm
www.quarryhs.co.uk
Index of /enc/fww1
www.airwar.ru
Tips!原文引用元：
https://warspot.ru/3066-sau-pod-znakom-y
warspot.ru
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