1. (1) Architectural Institute of Japan (ed.): Daylighting Design Shokokusha, Tokyo, (1963) (in Japanese)
2. (2) Ito, K. and Ohno, H.: Study on Standardization of Sky Luminance, Transactions of the Architectural Institute of Japan, 215, (1974) pp. 51-58 (in Japanese)
3. (3) Ito, K. and Ohno, H.: Estimation of Standard Sky Luminance for Lighting Design in Japan, Transactions of the Architectural Institute of Japan, 229, (1975) pp. 85-91 (in Japanese)
4. (4) Nakamura, H. and Oki, M.: Measurement of Luminance Distribution under Various Sky Conditions by Orthographic Projection Camera, CR, C.I.E., 18e Session, Londres, (1975) pp. 493-502
5. (5) Nakamura, H.: Measurement of Luminance and Luminance Distribution by Orthogrophic Projection Camera (Part 1), Transactions of the Architectural Institute of Japan, 243, (1976) pp. 73-79 (in Japanese)