Reactive nitrogen as a threat to European water quality. European Nitrogen Assessment.. 2011.
Coupled biogeochemical cycles: eutrophication and hypoxia in temperate estuaries and coastal marine ecosystems. Frontiers in Ecology and the Environment. 9(1):18-26.. 2011.
Nitrogen fluxes from the landscape are controlled by net anthropogenic nitrogen inputs and by climate. Frontiers in Ecology and the Environment. 10(1):37-43.. 2012.