@book {21,
	title = {Nomenclator Botanicus. Editio secunda},
	volume = {1},
	year = {1840},
	pages = {852},
	author = {Steudel, E.G. von}
}
@book {20,
	title = {Conspectus Florae Europaeae Suppl.},
	volume = {2 (1)},
	year = {1889},
	author = {Nyman, C.F.}
}
@book {19,
	title = {Spicilegium observationum de Aconito},
	year = {1788},
	pages = {60},
	author = {Koelle, J.L.C.}
}
@book {18,
	title = {Synopsis der mitteleurop{\"a}ischen Flora},
	volume = {5 (2)},
	year = {1929},
	author = {Ascherson, P.F.A. and Graebner, P.}
}
@book {17,
	title = {Deutschlands flora, mit abbildungen s{\"a}mmtlicher gattungen auf 100 tafeln},
	year = {1846},
	pages = {668},
	publisher = {G. Wigand},
	organization = {G. Wigand},
	address = {Leipzig},
	author = {Petermann, W.L.}
}
@book {16,
	title = {Neueste Physikalisch-Politische Reisen in den Jahren 1788 und 1789 durch die Dacischen und Sarmatischen oder N{\"o}rdlichen Karpathen},
	volume = {1},
	year = {1790},
	pages = {207},
	author = {Hacquet, B.A.}
}
@book {12,
	title = {Regni Vegetabilis Systema Naturale, sive Ordines, Genera et Species Plantarum Secundum Methodi Naturalis Normas Digestarum et Descriptarum},
	volume = {1},
	year = {1817},
	pages = {116},
	publisher = {Sumptibus sociorum Treuttel et Würtz},
	organization = {Sumptibus sociorum Treuttel et Würtz},
	address = {Paris},
	author = {Candolle, A.P. de}
}
@book {10,
	title = {Novitiae Florae Suecicae},
	year = {1828},
	pages = {306},
	publisher = {Ex Officina Berlingiana},
	organization = {Ex Officina Berlingiana},
	edition = {2},
	author = {Fries, E.M. and Wahlenberg, G. and Ahnfelt, N.O.}
}
@book {6,
	title = {Uebersicht der Gattung Aconitum},
	year = {1819},
	pages = {84},
	address = {Regensburg},
	author = {Reichenbach, H.G.L.}
}
@book {5,
	title = {Species Plantarum},
	volume = {1},
	year = {1753},
	pages = {560},
	author = {Linnaeus, C.}
}
