A proposal for modification of the Belgian biotic index method
Bervoets, L.; Bruylants, B.; Marquet, P.; Vandelanoote, A.; Verheyen, R. (1989). A proposal for modification of the Belgian biotic index method. Hydrobiologia 179(3): 223-228. https://dx.doi.org/10.1007/BF00006635
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117, more