1) AIKEN G. R. Edi. Humic substances in soil, sediment and water. Geochemistry, Isolation and Characterization. A Wiley-Interscience Publication. (1985)
2) 小山忠四郎. 生物地球化学. 東海大学出版会. (1980)
3) KUROKAWA Y. Investigation on gel chromatografie desalting and flow injector analyses of phosphate. Master thesis, Kyshu Univ.. (1980)
4) OTSUKI A. Seasonal changes of the total phosphorus standing crop in a highly eutrophic lake : the importance loading for shallow lake restoration. Verh. Int. Verein. Limnol. (1981) vol.21, p.634-639.