@book{5011,
	author = {Archenhold, Günter and Archenhold Sternwarte Berlin-Treptow and Archenhold, Friedrich Simon},
	title = {Der gestirnte Himmel im Januar 1934},
	publisher = {Willy Iszdonat},
	year = {1934},
	address = {Berlin O 17},
	url = {https://www.astw.de/publikationen/weltall/pdf/weltall_jg_33.pdf}
}