1. COCK, J. H. and S. YOSHIDA 1973. Photosynthesis, crop growth, and respiration of a tall and short rice varieties. Soil Sci. Plant Nutr. 19: 53-60.
2. GAASTRA, P. 1958. Light energy conversion in field crops in comparison with the photosynthetic efficiency under loboratory conditions Meded. Landbouwhogeschool, Wageningen 58: 1-12.
3. HAYASHI, K. 1969. Efficiencies of solar energy conversion and relating characteristics in rice varieties. Proc. Crop Sci. Japan 38: 495-500.