@article {16,
	title = {{\"U}ber die Blattstruktur der Gattung Cecropia},
	journal = {Bibliotheca Botanica},
	volume = {43},
	year = {1898},
	author = {Richter, Aladar}
}
@book {37,
	title = {Flora},
	series = {Flora},
	volume = {24(2)},
	year = {1841},
	author = {Martius, Carolus Fridericus Philippus}
}
