@techreport{environnementbrussels2018biological, title = {Biological Quality of Waters and Ponds in Brussels} author = {Environnement.Brussels - Leefmilieu.Brussels}, url = {https://environnement.brussels/lenvironnement-etat-des-lieux/rapports-sur-letat-de-lenvironnement/synthese-2015-2016/eau-et-8}, year = {2018} }