1. A decision support system for smallholder campesino maize-cattle production systems of the Toluca Valley in Central Mexico. Part I—integrating biological and socio-economic models into a holistic system;Castelan-Ortega;Agric. Syst.,2003
2. De Buck, A.J., De Ruijter, F.J., Wijnands, F., Van Enkevort, P.L.A., Van Dijk, W., Pronk, A.A., De Haan, J., Booij, R., 2000. Forward with the environmental performance of the Dutch broad-acre crops: an exploration towards 2020. Plant Research International, Rapport 6.
3. Resource use efficiency in agriculture;De Wit;Agric. Syst.,1992
4. DIEA, 1994. Censo General Agropecuario 1990. Ministerio de Ganadería Agricultura y Pesca, Montevideo, Uruguay.
5. DIEA, 2000 (unpublished). Results of the Agricultural Census 2000 for the area of Canelón Grande.