@book{4775,
	author = {Archenhold Sternwarte Berlin-Treptow and Archenhold, Friedrich Simon},
	title = {Kleine Mitteilungen},
	publisher = {Wilhelm Grewe},
	year = {1931},
	address = {Berlin SW 68},
	url = {https://www.astw.de/publikationen/weltall/pdf/weltall_jg_30.pdf}
}