@book {568,
	title = {Naturwissenschaftliche Reise nach Mossambique auf Befehl Seiner Majest{\"a}t des K{\"o}nigs Friedrich Wilhelm IV in den Jahren 1842 bis 1848 ausgef{\"u}hrt.},
	volume = {Zoologie. IV. Flussfische},
	year = {1868},
	pages = { i-viii + 1-116, Pls. 1-20.},
	publisher = {G. Reimer},
	organization = {G. Reimer},
	address = {Berlin},
	author = {Peters, W.}
}
@article {cite-key,
	title = {Catalogue of the fishes in the British Museum. Catalogue of the Physostomi, containing the families Heteropygii, Cyprinidae, Gonorhynchidae, Hyodontidae, Osteoglossidae, Clupeidae,... [thru]... Halosauridae, in the collection of the British Museum},
	journal = {Catalogue of the fishes in the British Museum},
	volume = {7},
	year = {1868},
	month = {Mar.},
	pages = {i-xx + 1-512},
	keywords = {Xenomystus nigri},
	author = {G{\"u}nther, Albert C. L. G.}
}
