Wollheim W.M., Vorosmarty C.J., Bouwman A.F., Green P.A., Harrison J., Linder E., Peterson B.J., Green P.A., Seitzinger S., Syvitski J.P.M..
2008.
Global N removal by freshwater aquatic systems A spatially distributed, within-basin approach. Global Biogeochemical Cycles. 22