Riess, Adam G.; Casertano, Stefano; Yuan, Wenlong; Macri, Lucas; Bucciarelli, Beatrice; Lattanzi, Mario G.; MacKenty, John W.; Bowers, J. Bradley et al.. (2018-07-12). «Milky Way cepheid standards for measuring cosmic distances and application to Gaia DR2: Implications for the Hubble constant» The Astrophysical Journal 861 (2): 126. doi:10.3847/1538-4357/aac82e. ISSN1538-4357. Bibcode: 2018ApJ...861..126R..
Freedman, Wendy L.; Madore, Barry F.; Hatt, Dylan; Hoyt, Taylor J.; Jang, In-Sung; Beaton, Rachael L.; Burns, Christopher R.; Lee, Myung Gyoon et al.. (2019-08-29). «The Carnegie-Chicago Hubble Program. VIII. An independent determination of the Hubble constant based on the tip of the red giant branch» The Astrophysical Journal 882 (1): 34. doi:10.3847/1538-4357/ab2f73. ISSN1538-4357. Bibcode: 2019ApJ...882...34F..
Bennett, C.L.. (2013). «Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Final maps and results» The Astrophysical Journal Supplement Series 208 (2): 20. doi:10.1088/0067-0049/208/2/20. Bibcode: 2013ApJS..208...20B..
Riess, Adam G.; Casertano, Stefano; Yuan, Wenlong; Macri, Lucas; Bucciarelli, Beatrice; Lattanzi, Mario G.; MacKenty, John W.; Bowers, J. Bradley et al.. (2018-07-12). «Milky Way cepheid standards for measuring cosmic distances and application to Gaia DR2: Implications for the Hubble constant» The Astrophysical Journal 861 (2): 126. doi:10.3847/1538-4357/aac82e. ISSN1538-4357. Bibcode: 2018ApJ...861..126R..
Freedman, Wendy L.; Madore, Barry F.; Hatt, Dylan; Hoyt, Taylor J.; Jang, In-Sung; Beaton, Rachael L.; Burns, Christopher R.; Lee, Myung Gyoon et al.. (2019-08-29). «The Carnegie-Chicago Hubble Program. VIII. An independent determination of the Hubble constant based on the tip of the red giant branch» The Astrophysical Journal 882 (1): 34. doi:10.3847/1538-4357/ab2f73. ISSN1538-4357. Bibcode: 2019ApJ...882...34F..
Bennett, C.L.. (2013). «Nine-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Final maps and results» The Astrophysical Journal Supplement Series 208 (2): 20. doi:10.1088/0067-0049/208/2/20. Bibcode: 2013ApJS..208...20B..
worldcat.org
Riess, Adam G.; Casertano, Stefano; Yuan, Wenlong; Macri, Lucas; Bucciarelli, Beatrice; Lattanzi, Mario G.; MacKenty, John W.; Bowers, J. Bradley et al.. (2018-07-12). «Milky Way cepheid standards for measuring cosmic distances and application to Gaia DR2: Implications for the Hubble constant» The Astrophysical Journal 861 (2): 126. doi:10.3847/1538-4357/aac82e. ISSN1538-4357. Bibcode: 2018ApJ...861..126R..
Freedman, Wendy L.; Madore, Barry F.; Hatt, Dylan; Hoyt, Taylor J.; Jang, In-Sung; Beaton, Rachael L.; Burns, Christopher R.; Lee, Myung Gyoon et al.. (2019-08-29). «The Carnegie-Chicago Hubble Program. VIII. An independent determination of the Hubble constant based on the tip of the red giant branch» The Astrophysical Journal 882 (1): 34. doi:10.3847/1538-4357/ab2f73. ISSN1538-4357. Bibcode: 2019ApJ...882...34F..