1. Biotic interactions;Curr. Opinion Plant Biol.,2002
2. Controls over the allocation of resources by woody plants to chemical antiherbivore defense;Bryant,1991
3. The Families and Genera of Vascular Plants;Kubitzki,1990
4. Phylogeny of vascular plants;Doyle;Annu. Rev. Ecol. Syst.,1998
5. Die Fichte, Band I. Taxonomie-Verbreitung-Morphologie-Ökologie-Waldgesellschaften;Schmidt-Vogt,1987