Soszyński, I.; Udalski, A.; Szymański, M. K.; Kubiak, M.; Pietrzyński, G.; Wyrzykowski, Ł.; Szewczyk, O.; Ulaczyk, K.; Poleski, R. (2008). „The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. II.Type II Cepheids and Anomalous Cepheids in the Large Magellanic Cloud”. Acta Astronomica. 58: 293. Bibcode:2008AcA....58..293S. arXiv:0811.3636.
Benedict, G. Fritz; McArthur, Barbara E.; Feast, Michael W.; Barnes, Thomas G.; Harrison, Thomas E.; Patterson, Richard J.; Menzies, John W.; Bean, Jacob L.; Freedman, Wendy L. (2007). „Hubble Space Telescope Fine Guidance Sensor Parallaxes of Galactic Cepheid Variable Stars: Period-Luminosity Relations”. The Astronomical Journal. 133 (4): 1810. Bibcode:2007AJ....133.1810B. arXiv:astro.ph/0612465. doi:10.1086/511980.
Stanek, K. Z.; Udalski, A. (1999). „The Optical Gravitational Lensing Experiment. Investigating the Influence of Blending on the Cepheid Distance Scale with Cepheids in the Large Magellanic Cloud”. arXiv:astro-ph/9909346.
Udalski, A.; Wyrzykowski, L.; Pietrzynski, G.; Szewczyk, O.; Szymanski, M.; Kubiak, M.; Soszynski, I.; Zebrun, K. (2001). „The Optical Gravitational Lensing Experiment. Cepheids in the Galaxy IC1613: No Dependence of the Period-Luminosity Relation on Metallicity”. Acta Astronomica. 51: 221. Bibcode:2001AcA....51..221U. arXiv:astro.ph/0109446.
Freedman, Wendy L.; Madore, Barry F.; Gibson, Brad K.; Ferrarese, Laura; Kelson, Daniel D.; Sakai, Shoko; Mould, Jeremy R.; Kennicutt, Jr., Robert C.; Ford, Holland C.; Graham, John A.; Huchra, John P.; Hughes, Shaun M. G.; Illingworth, Garth D.; Macri, Lucas M.; Stetson, Peter B. (2001). „Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant”. The Astrophysical Journal. 553 (1): 47—72. Bibcode:2001ApJ...553...47F. S2CID119097691. arXiv:astro.ph/0012376. doi:10.1086/320638.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E.; Slesnick, C. L.; Rhee, J.; Patterson, R. J.; Skrutskie, M. F.; Franz, O. G.; Wasserman, L. H.; Jefferys, W. H.; Nelan, E.; Van Altena, W.; Shelus, P. J.; Hemenway, P. D.; Duncombe, R. L.; Story, D.; Whipple, A. L.; Bradley, A. J. (2002). „Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei”. The Astronomical Journal. 124 (3): 1695. Bibcode:2002AJ....124.1695B. S2CID42655824. arXiv:astro.ph/0206214. doi:10.1086/342014.
Benedict, G. Fritz; McArthur, Barbara E.; Feast, Michael W.; Barnes, Thomas G.; Harrison, Thomas E.; Patterson, Richard J.; Menzies, John W.; Bean, Jacob L.; Freedman, Wendy L. (2007). „Hubble Space Telescope Fine Guidance Sensor Parallaxes of Galactic Cepheid Variable Stars: Period-Luminosity Relations”. The Astronomical Journal. 133 (4): 1810. Bibcode:2007AJ....133.1810B. arXiv:astro.ph/0612465. doi:10.1086/511980.
Freedman, Wendy L.; Madore, Barry F.; Gibson, Brad K.; Ferrarese, Laura; Kelson, Daniel D.; Sakai, Shoko; Mould, Jeremy R.; Kennicutt, Jr., Robert C.; Ford, Holland C.; Graham, John A.; Huchra, John P.; Hughes, Shaun M. G.; Illingworth, Garth D.; Macri, Lucas M.; Stetson, Peter B. (2001). „Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant”. The Astrophysical Journal. 553 (1): 47—72. Bibcode:2001ApJ...553...47F. S2CID119097691. arXiv:astro.ph/0012376. doi:10.1086/320638.
Macri, Lucas M.; Riess, Adam G.; Guzik, Joyce Ann; Bradley, Paul A. (2009). „The SH0ES Project: Observations of Cepheids in NGC 4258 and Type Ia SN Hosts”. AIP Conference Proceedings. Stellar Pulsation: Challenges for Theory and Observation: Proceedings of the International Conference. AIP Conference Proceedings. 1170. стр. 23—25. Bibcode:2009AIPC.1170...23M. doi:10.1063/1.3246452.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E.; Slesnick, C. L.; Rhee, J.; Patterson, R. J.; Skrutskie, M. F.; Franz, O. G.; Wasserman, L. H.; Jefferys, W. H.; Nelan, E.; Van Altena, W.; Shelus, P. J.; Hemenway, P. D.; Duncombe, R. L.; Story, D.; Whipple, A. L.; Bradley, A. J. (2002). „Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei”. The Astronomical Journal. 124 (3): 1695. Bibcode:2002AJ....124.1695B. S2CID42655824. arXiv:astro.ph/0206214. doi:10.1086/342014.
Hertzsprung, E. (1913). „Über die räumliche Verteilung der Veränderlichen vom δ Cephei-Typus” [On the spatial distribution of variable [stars] of the δ Cephei type]. Astronomische Nachrichten (на језику: немачки). 196 (4692): 201—208. Bibcode:1913AN....196..201H.
Soszyński, I.; Udalski, A.; Szymański, M. K.; Kubiak, M.; Pietrzyński, G.; Wyrzykowski, Ł.; Szewczyk, O.; Ulaczyk, K.; Poleski, R. (2008). „The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. II.Type II Cepheids and Anomalous Cepheids in the Large Magellanic Cloud”. Acta Astronomica. 58: 293. Bibcode:2008AcA....58..293S. arXiv:0811.3636.
Benedict, G. Fritz; McArthur, Barbara E.; Feast, Michael W.; Barnes, Thomas G.; Harrison, Thomas E.; Patterson, Richard J.; Menzies, John W.; Bean, Jacob L.; Freedman, Wendy L. (2007). „Hubble Space Telescope Fine Guidance Sensor Parallaxes of Galactic Cepheid Variable Stars: Period-Luminosity Relations”. The Astronomical Journal. 133 (4): 1810. Bibcode:2007AJ....133.1810B. arXiv:astro.ph/0612465. doi:10.1086/511980.
Udalski, A.; Wyrzykowski, L.; Pietrzynski, G.; Szewczyk, O.; Szymanski, M.; Kubiak, M.; Soszynski, I.; Zebrun, K. (2001). „The Optical Gravitational Lensing Experiment. Cepheids in the Galaxy IC1613: No Dependence of the Period-Luminosity Relation on Metallicity”. Acta Astronomica. 51: 221. Bibcode:2001AcA....51..221U. arXiv:astro.ph/0109446.
Freedman, Wendy L.; Madore, Barry F.; Gibson, Brad K.; Ferrarese, Laura; Kelson, Daniel D.; Sakai, Shoko; Mould, Jeremy R.; Kennicutt, Jr., Robert C.; Ford, Holland C.; Graham, John A.; Huchra, John P.; Hughes, Shaun M. G.; Illingworth, Garth D.; Macri, Lucas M.; Stetson, Peter B. (2001). „Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant”. The Astrophysical Journal. 553 (1): 47—72. Bibcode:2001ApJ...553...47F. S2CID119097691. arXiv:astro.ph/0012376. doi:10.1086/320638.
Macri, Lucas M.; Riess, Adam G.; Guzik, Joyce Ann; Bradley, Paul A. (2009). „The SH0ES Project: Observations of Cepheids in NGC 4258 and Type Ia SN Hosts”. AIP Conference Proceedings. Stellar Pulsation: Challenges for Theory and Observation: Proceedings of the International Conference. AIP Conference Proceedings. 1170. стр. 23—25. Bibcode:2009AIPC.1170...23M. doi:10.1063/1.3246452.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E.; Slesnick, C. L.; Rhee, J.; Patterson, R. J.; Skrutskie, M. F.; Franz, O. G.; Wasserman, L. H.; Jefferys, W. H.; Nelan, E.; Van Altena, W.; Shelus, P. J.; Hemenway, P. D.; Duncombe, R. L.; Story, D.; Whipple, A. L.; Bradley, A. J. (2002). „Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei”. The Astronomical Journal. 124 (3): 1695. Bibcode:2002AJ....124.1695B. S2CID42655824. arXiv:astro.ph/0206214. doi:10.1086/342014.
Freedman, Wendy L.; Madore, Barry F.; Gibson, Brad K.; Ferrarese, Laura; Kelson, Daniel D.; Sakai, Shoko; Mould, Jeremy R.; Kennicutt, Jr., Robert C.; Ford, Holland C.; Graham, John A.; Huchra, John P.; Hughes, Shaun M. G.; Illingworth, Garth D.; Macri, Lucas M.; Stetson, Peter B. (2001). „Final Results from the Hubble Space Telescope Key Project to Measure the Hubble Constant”. The Astrophysical Journal. 553 (1): 47—72. Bibcode:2001ApJ...553...47F. S2CID119097691. arXiv:astro.ph/0012376. doi:10.1086/320638.
Benedict, G. Fritz; McArthur, B. E.; Fredrick, L. W.; Harrison, T. E.; Slesnick, C. L.; Rhee, J.; Patterson, R. J.; Skrutskie, M. F.; Franz, O. G.; Wasserman, L. H.; Jefferys, W. H.; Nelan, E.; Van Altena, W.; Shelus, P. J.; Hemenway, P. D.; Duncombe, R. L.; Story, D.; Whipple, A. L.; Bradley, A. J. (2002). „Astrometry with the Hubble Space Telescope: A Parallax of the Fundamental Distance Calibrator δ Cephei”. The Astronomical Journal. 124 (3): 1695. Bibcode:2002AJ....124.1695B. S2CID42655824. arXiv:astro.ph/0206214. doi:10.1086/342014.