1. Anderson, J. R., Hardy, E. E., Roach, J. T. & Witmer, R. E. (1976) A land-use and land-cover classification system for use with remote-sensor data. Prof. paper # 964, USGS,Reston,l-28.
2. Best, E. P. H. (1982a) Effects of water pollution on freshwater submerged macrophytes. In: Varsney, C. K. (Ed.). Water Pollution and Management Reviews 1982. pp. 27–56.
3. Best, E. P. H. (1982b) The aquatic macrophytes of Lake Vechten. Species composition, spatial distribution and productivity. Hydrobiologia, 99: 65–77.
4. Best, E. P. H. (1988) The phytosociological approach to the description and classification of aquatic macrophytic vegetation. In: Symoens, J. J. (ed.), Handbook of Vegetation Science, Junk, 15 (This volume), pp. 155–182.
5. Best, E. P. H. & Dassen, J. H. A. (1987) Biomass, stand area, primary production characteristics and oxygen regime of the Ceratophyllum demersum L. population in Lake Vechten, The Netherlands. Arch. f. Hydrobiol. supl. 76: 347–367.