==External links==*1940 "Popular Science" cover illustration of twin 40mm Bofors in Swedish service*"New Tools For Army Power", October 1941, "Popular Science", pages 73–74 on testing of US version of 40mm Bofors*40-mm Automatic Gun M1 (AA) and 40-mm Antiaircraft Gun Carriages M2 and M2A1 TM 9-252*40 MM Antiaircraft Gun, OP 820, 1943 : Navy Service Manual placed online courtesy of maritime.org*Data and spec comparison of various marks of Bofors 40mm L/60*Data and Spec comparison of various marks of Bofors 40mm L/70*Rae, CJE, Harris, AL & Bryant, RK 1987, On target: the story of the 2/3 Australian Light Anti-Aircraft Regiment from formation on 18 July 1940 until disbandment on 14 July 1943 and the subsequent service of 7th Battery, 8th Battery, and 9th Battery, until the end of World War II, 2/3rd Australian Light Anti-Aircraft Regiment Association, Melbourne
) 2002, "Encyclopaedia of weapons of World War II", MetroBooks, New York.