Mapping and characterization of CNP flows and their stoichiometry in main farming systems in Europe

Duan, Y.F.; Bruun, S.; Jensen, Lars Stoumann; van Gerven, L.P.A.; Hendriks, C.M.J.; Veenemans, L.; Groenendijk, P.; Lesschen, J.P.; Prado, J.; Fangueiro, D.