@book{UBHD-2134584, author={Geyer, U.}, title={The zero-point of the period-luminosity-relation of Cepheids}, publisher={Astronom. Rechen-Institut}, address={Heidelberg}, year={1970}, pages={S. 116-126}, language={eng}, number={ARRAY(0x55674f9d4b28)}, series={Mitteilungen / Astronomisches Recheninstitut in Heidelberg}, note={Aus: Astronomy and astrophysics. 5. 1970}, library={UB [Signatur: 71 S 63]}, }