V. D. P. Sastri

Spectral Distribution and Color of Tropical Daylight

S. R. Das, S. Das, V. D. P. Sastri, 1965 .

Spectral Distribution and Color of North Sky at Delhi

S. R. Das, V. D. P. Sastri, 1966 .

Typical Spectral Distributions and Color for Tropical Daylight

S. R. Das, V. D. P. Sastri, V. Sastri, 1968 .