Components of functional-structural tree models Risto Sievänen, Eero Nikinmaa, Pekka Nygren, Harry Ozier-Lafontaine, Jari Perttunen and Harri HakulaAnn. For. Sci., 57 5 (2000) 399-412DOI: https://doi.org/10.1051/forest:2000131
