A.  Leip, Billen, G., Garnier, J., Grizzetti, B., Lassaletta, L., Reis, S., Simpson, D., Sutton, M. A., De Vries, W., Weiss, F., and Westhoek, H., ?{Impacts of European livestock production: nitrogen, sulphur, phosphorus and greenhouse gas emissions, land-use, water eutrophication and biodiversity}?, Environmental Research Letters, vol. 10, p. 115004, 2015.