References
- Directive 2000/60/EC of the European Parliament and of the Council 23 October 2000 establishing a framework for Community action in the filed of water policy. — Off. J. Eur. Communities 43: 1–72.
- Hill, M. O., 1979a: TWINSPAN — a FORTRAN Program for Arranging Multivariate Data in an Ordered Two-way Table by Classification of the Individuals and Attributes. — Cornell University, Ithaca, New York. 90 pp.
- Hill, M. O., 1979b: DECORANA-a FORTRAN Program for Detrended Correspondence Analysis and Reciprocal Averaging. — Cornell University, Ithaca, New York. 52 pp.
- Palmer, M. A., Bell, S. L. & Butterfield, I., 1992: A botanical classification of standing waters in Britain: applications for conservation and monitoring. — Aquat. Conserv. Mar. Freshwater Ecosyst. 2: 125–143.
- Preston, C. D. & Croft, J. M., 1997: Aquatic Plants in Britain and Ireland — Harley Books, Colchester. 365 pp.
- Smith, S. J., Wolfe-Murphy, S. A., Lawrie, E. W. & Gibson, C. E., 1992: Northern Ireland Lake Survey: Lake Classification. A Classification and Ordination of Open Water Bodies in Northern Ireland Based on Their Aquatic Macrophytes, Rep. No. 3. — Northern Ireland Freshwater Biological Investigation Unit, Belfast.