Modelling weed emergence patterns / L.M. VleeshouwersCESAR: a model for carbon emission and sequestration by agricultural land use / L.M. Vleeshouwers & A. VerhagenChlorophyll and nitrogen relations in maize with regards to spectral properties : forcing methods of remote sensing data in crop growth simulation models : deliverable D06 EU Croma (EVG1-2000-000027) / L.M. Vleeshouwers & R.E.E. Jongschaap