Opening the black box of energy throughputs in farm systems: A decomposition analysis between the energy returns to external inputs, internal biomass reuses and total inputs consumed (the Vallès County, Catalonia, c.1860 and 1999)

1. Tello, E.
2. Galán, E.
3. Sacristán, V.
4. Cunfer, G.
5. Guzmán, G.I.
6. González de Molina, M.
7. Krausmann, F.
8. Gingrich, S.
9. Padró, R.
10. Marco, I.
11. Moreno-Delgado, D.