Stamen diversity and in situ, pollen of Cretaceous angiosperms. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors)
Reference:
Friis,E.M. et al. (1991)
Stamen diversity and in situ, pollen of Cretaceous angiosperms. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) The Systematics Association,Special Volume. Pollen and Spores, Patterns of Diversification. (S.Blackmore and S.H.Barnes, editors)
# 44 P. 197- 224