1. Introduction to modularity in plant models;Acock;Ecol. Modell.,1997
2. Annual carbon budget for a young Scots pine;Ågren,1980
3. Root: shoot ratio as a balance between nitrogen productivity and photosynthesis;Ågren;Plant, Cell Environ.,1987
4. Site differences in yield-differences;Axelsson,1981
5. Regulation of shoot/root ratio by cytokinins from roots in Urtica dioica: opinion;Beck;Plant and Soil,1996