1. Phosphorus sources and transport in an agricultural river basin of Lake Erie;Baker;Internat. Assoc. Great Lakes Res,1973
2. Canada Centre for Inland Waters. 1972. Population estimates for the Great Lakes basins and their major tributaries. Canada Centre for Inland Waters, Burlington, Ontario, Social Science Series No. 1.
3. IFYGL stream materials balance study (IFYGL);Casey;Internat. Assoc. Great Lakes Res.,1974
4. Chapra, S. C. 1975. Comment on “An Empirical Method of Estimating the Retention of Phosphorus in Lakes” by W. B. Kirchner and P. J. Dillon. Water Resour. Res. 11:1033-1034.
5. Total phosphorus model for the Great Lakes;Chapra;J. Env. Eng. Div., ASCE,1977