1. Light transmission through a forest canopy depending on the incident radiation and density of the tree crowns;Akulova;Plant Physiol. (USSR) (English Transl.),1964
2. Light measurements under a forest canopy;Alekseev;Plant Physiol. (USSR) (English Transl.),1963
3. Photosynthesis under field conditions. VII. Radiant energy exchange within a corn crop canopy and implications in water use efficiency;Allen;Agron. J.,1964