1. 1) C. Chang: Vitamins (A Japanese Journal of Vitaminology), 2: 174, 1950.
2. 2) D. Matsukawa & H. Misawa: Proceedings of the Committee on Research of. Vitamin B, 31:16, 1949.
3. 3) A. Fujita, H. Saeki, T. Kishida, & T. Tashiro: ditto, 35:6, 1949.
4. 4) A. Fujita, H. Saeki, M. Yamadori, & T. Kishida: ditto, 36:11, 1950.
5. 5) R. Kimura & R. Hayashi: ditto, 37: 16, 1950; 42:12, 1950; 43:5, 1950; 45:8, 1951.