1. The full-field camera photogrametric technique in lightning research;Longmore;Photographic J.,1964
2. Measurement of Luminance Distribution Under Various Sky Conditions by orthographic Projection Camera;Nakamura;Publication C.E.E. No. 36, Comp. Rendo 18a,1975
3. On the anisotropy of diffuse radiation;McArthur;Bull. Am. Metereol. Soc.,1978
4. An all-sky, video-based luminance mapper for daylightning research;Cannon,1981