Grimmer, C. and Komor, E.  1999.  Assimilate export by leaves of Ricinus communis L. growing under normal and elevated carbon dioxide concentrations: the same rate during the day, a different rate at night.  Planta 209: 275-281.

Grimmer, C., Bachfischer, T. and Komor, E.  1999.  Carbohydrate partitioning into starch in leaves of Ricinus communis L. grown under elevated CO2 is controlled by sucrose.  Plant, Cell and Environment 22: 1275-1280.