References
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- Westlake, D. F., 1965: Some basic data for investigations of the productivity of aquatic macrophytes. – Mem. 1st. Ital. Idrobiol. 18 (Suppl.): 229–248.
- Westlake, D. F. 1967: Some effects of low-velocity currents on the metabolism of aquatic macrophytes. — J. exp. Bot. 18: 187–205.