PENNING, Willemijntje E., Rob UITTENBOGAARD, Maarten OUBOTER, and Ellen VAN DONK. 2010. “Local Deepening of Large Shallow Peat Lakes: A Measure to Improve Their Ecological Status”. Journal of Limnology 69 (1):126-37. https://doi.org/10.4081/jlimnol.2010.126.