1. Feng, L. (1980): The rainy season and its variation in Beijing during the last 255 years. Acta Meteor-ologiica Sinica, 38, 341-350.
2. Hahn, S. (1970): On the precipitation records in Seoul for 200 years long. The Annual Review of the Korean National Committee for IUGG. 9-21.
3. Maejima, I. and Koike, Y. (1976): An attempt at reconstructing the historical weather situations in Japan. Geogr. Rep. Tokyo Metrop. Univ., 11, 1-12.
4. Maejima, I. and Tagami, Y.(1983): Climate of Little Ice Age in Japan. Geogr. Rep. Tokyo Metrop. Univ., 18, 91-111.
5. Maejima, I., Nogami, M., Oka, S., and Tagami, Y. (1983) : Historical weather records at Hirosaki, Northern Japan, from 1661 to 1868. Geogr. Rep. Tokyo Metrop. Univ., 18, 113-152.