@article {Tapper1992,
	title = {Demography of persistent juveniles in Fraxinus excelsior},
	journal = {Ecography},
	volume = {15},
	number = {4},
	year = {1992},
	pages = {385{\textendash}392},
	url = {http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0587.1992.tb00048.x/abstract},
	author = {Tapper, PG}
}
