@book {49348,
	title = {Diptera scandinaviae, disposita et descripta},
	volume = {9},
	year = {1850},
	pages = {3367-3710},
	address = {Lundae},
	author = {Zetterstedt, Johann Vilhelm}
}
@book {43795,
	title = {Ueber den Bernstein und die Bernsteinfauna},
	series = {Programm der K{\"o}niglichen Realschule zu Meseritz},
	year = {1850},
	note = {27 September (Evenhuis)},
	pages = {1-44},
	publisher = {F. W. Lorenz},
	organization = {F. W. Lorenz},
	address = {Meseritz},
	author = {Loew, H.}
}
@book {21716,
	title = {Histoire naturelle des insectes Orthopt{\`e}res, N{\'e}vropt{\`e}res, H{\'e}mipt{\`e}res, Hym{\'e}nopt{\`e}res, Lepidopt{\`e}res et Dipt{\`e}res. Part 1.},
	year = {1850},
	pages = {672},
	publisher = {Societe Bibliophile},
	organization = {Societe Bibliophile},
	address = {Paris},
	author = {Blanchard, Emile}
}
@book {22155,
	title = {Die Insectenfauna der Tertiargebilde von Oeningen und Radoboj in Croatien},
	series = {Zweite Theil: Heuschrecken, Florfliegen, Aderfl{\"u}gler, Schmetterlinge und Fliegen},
	year = {1850},
	month = {after 10 June},
	pages = {vi+264 pp.},
	publisher = {W. Engelmann},
	organization = {W. Engelmann},
	address = {Leipzig},
	author = {Heer, O.}
}
@article {23193,
	title = {Diptera nonnulla exotica descripta},
	journal = {Transactions of the Entomological Society of London},
	volume = {5},
	year = {1850},
	pages = {8 (in repr.), pl. 23},
	author = {Westwood, J. O.}
}
