1. Hatakeyama, I.: An example of double freezing of a green leaf. Kagaku (Tokyo) 22, 652?653 (1952) [in Japanese].
2. Hatakeyama, I.: The relation between growth and cold hardiness of leaves of Camellia sinensis. Biol. J. Nara Women's Univ. No 10, 65?69 (1960) [in Japanese, with English summary].
3. ?: Studies on the freezing of living and dead tissues of plants, with special reference to the colloidally bound water in living state. Mem. Coll. Sci. Univ. Kyoto B 28, 401?429 (1961).
4. Kawano, K., and I. Hatakeyama: Studies on the solute of the cell sap of mulberry trees. (1) Seasonal changes in the solute ratio of the expressed sap of leaves. Bull. Fac. Text. Fib. Kyoto Univ. of Industry Arts and Textile Fibers 3, 217?220 (1961).
5. ?, R. Tuzii, and I. Hatakeyama: Studies on the seasonal change in the freezing point of the bud of mulberry tree. Bull. Fac. Text. Fib. Kyoto Univ. of Industry Arts and Textile Fibers 3, 32?36 (1960).