@book {bhl142265,
	title = {Hortus Kewensis},
	volume = {5},
	year = {1813},
	note = {http://www.biodiversitylibrary.org/bibliography/71678},
	pages = {72},
	publisher = {Geoge Nicol},
	organization = {Geoge Nicol},
	address = {London},
	keywords = {Angiospermas|Gimnospermas|Obras cl{\'a}sicas|Pterid{\'o}fitos|},
	url = {http://www.biodiversitylibrary.org/item/142265},
	author = {Aiton, William}
}
@book {bhl142908,
	title = {Enumeratio plantarum Horti Regii Berolinensis. Supplementum},
	year = {1813},
	note = {http://www.biodiversitylibrary.org/bibliography/72321},
	pages = {59},
	publisher = {In Taberna libraria Scholae Realis},
	organization = {In Taberna libraria Scholae Realis},
	address = {Berolini},
	keywords = {Angiospermas|Gimnospermas|Obras cl{\'a}sicas|Pterid{\'o}fitos|},
	url = {http://www.biodiversitylibrary.org/item/142908},
	author = {Willdenow, Carl Ludwig von}
}
