1. Dunst, R. C. et al. Survey of Lake Rehabilitation Techniques and Experiences (Tech. Bull. No. 75, Dept Nat. Resources, Madison, Wisconsin, 1974).
2. Burns, C. Limnol. Oceanogr. 13, 675–678 (1968); Int. Rev. Ges. Hydrobiol. 53, 83–100 (1968).
3. Gliwicz, M. Bull. Acad. Polon. Sci., Cl. II, 17, 159–165 (1969); Verh. Int. Verein. Limnol. 19, 1490–1497 (1975).
4. Arnold, D. E. Limnol. Oceanogr. 16, 906–920 (1971).
5. Weers, E. T. & Zaret, T. M. Verh. Int. Verein. Limnol. 19, 1480–1483 (1975).