Bokhove, Onno and Dubbeldam, Johan and Getto, Philipp and van 't Hof, Bas and Ovenden, Nick and Pik, Derk and Prokert, Georg and Rottschäfer, Vivi and van der Sar, Dick  (2002) Roses are unselfish: a greenhouse growth model to predict harvest rates.  [Study Group Report]