1. Bagge, P. & L. Hakkari, 1985. Fish fauna of stony shores of Lake Saimaa (southeastern Finland) before and during the floods (1980–82). Aqua fenn. 15: 237–244.
2. Eloranta, A., 1985. The density, biomass and production of burbot (Lota lota L.) and other fishes in the stony littoral zone of Lake Kuohijärvi. Jyväskylän Yliopiston biol. laitoksen Tiedonantoja 43: 109–142. (in Finnish with an English summary).
3. Hakkari, L. (in press). Effects of pulp and paper mill effluents on fish populations in Finland. Finnish Fish Res. (1992).
4. Hakkari, L. & P. Bagge, 1987. Reproductive success of Coregonus albula L. in polluted and unpolluted areas of L. Päijänne during the years 1977–1986. Biol. Res. Rep. Univ. Jyväskylä 10: 149–156.
5. Hyvärinen, J., 1983. Fish and fishery study in central Päijänne in 1982. Hydrobiological Res. Centre Report 121: 43–66 (in Finnish with an English summary).