Greenhouse gas fluxes over managed grasslands in central Europe - Hörtnagl, L.; Barthel, M.; Buchmann, Nina; Eugster, W.; Butterbach-Bahl, Klaus; Díaz Pinés, Eugenio; Zeeman, M.; Khlumpp, K.; Kiese, Ralf; Bahn, M.; Hammerle, A.; Lu, H.; et al. (ETH Zurich, 2019)