1. Nitrogen: sources and transformation in natural water;Brezonik,1972
2. A dynamic model of the phytoplankton population in the Sacramento-San Joaquin Delta;Di Toro,1971
3. Development and Pollution of Lake Biwa,1975
4. Dynamics of the nitrogen cycle in a lake and its stability;Ikeda;Ecol. Modelling,1976
5. A simulation model of water quality in the Kinki Region linked with an integrated regional planning model;Ikeda,1976