title: En route to improved phenological models: can space-for-time substitution give guidance?
authors: Department of Forest Sciences, University of Helsinki, PO Box 27, Helsinki 00014, Finland.
authors: Annikki
authors: A
authors: Mäkelä
mesh_terms: D029662:Betula / Q000502:physiology*; D035264:Flowers / Q000502:physiology*