References
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- Kagawa, H., 1990: Ca-Mg index regulating phytoplanktonic particulate phosphorus concentration at the head of a river reservoir. — Verh. Internat. Verein. Limnol. 24: 158–161.
- Kagawa, H., 1992: Effects of diversion on the chemistry of a stream in Japan. — Regul. Riv. 7: 291–302.
- Kagawa, H., 1993: Hydrological factors influencing the effects of the ecological Ca-Mg index at the head of a river reservoir. — Verh. Internat. Verein. Limnol. 25: 203–206.
- Kagawa, H. & Togashi, M., 1989: Contribution of dissolved calcium and magnesium to phytoplanktonic paniculate phosphorus concentration at the heads of two river reservoirs. — Hydrobiologia 183: 185–193.
- Koroleff, F., 1983: Determination of phosphorus. — In: Grasshoff, K., Ehrhardt, M. & Kremling, K. (eds.): Methods of Seawater Analysis. 2nd revised ed.: 125–139. Verlag Chemie, Weinheim.
- Koyano, W., 1988: A Guide to Multivariate Analysis. – Kawashima Shoten, Tokyo, 174 pp. (in Japanese).
- Lorenzen, C. J., 1967: Determination of chlorophyll and pheopigments: spectrophotometric equations. — Limnol. Oceanogr. 12: 343–346.