1. Oritani, T. 1995. Cytokinins. In T. Matsuo, K. Kumazawa, R. Ishii, K. Ishihara and H. Hirata eds., Science of the Rice Plant. Vol. 2. Physiology. Food and Agriculture Policy Research Center, Tokyo. 189–198.
2. Osada, A. 1995. Photosynthesis and respiration in relation to nitrogen responsiveness. In T. Matsuo, K. Kumazawa, R. Ishii, K. Ishihara and H. Hirata eds., Science of the Rice Plant. Vol. 2. Physiology. Food and Agriculture Policy Research Center, Tokyo, Japan. 696–703.