1. ANON. The Focal Encyclopedia of Photography, p. 702, edited by F. Purves, Focal Press, London, 1956.
2. The Photographic Study of Rapid Events;CHESTERMAN,1951
3. GUTHRIE, C. A., Unpublished work.
4. Industrial and Commercial applications;JONES,1952
5. Converting the G.45, 16 mm aircraft gun camera for time-lapse photography;FOSTER;J. Sci. Instrum.,1962