Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. (September 2001). “The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope”. Astrophysical Journal (University of Chicago Press) 559 (1): 243-259. arXiv:astro-ph/0105491. Bibcode: 2001ApJ...559..243M. doi:10.1086/322395. ISSN0004-637X.
L. C. Ho, A. V. Filippenko, W. L. W. Sargent (1997). “A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies”. Astrophysical Journal Supplement112 (2): 315-390. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041.
"A Near-Infrared Atlas of Spiral Galaxies", Debra Meloy Elmegreen, "CH3. Discussion" (accessed 23 April 2010)
doi.org
Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. (September 2001). “The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope”. Astrophysical Journal (University of Chicago Press) 559 (1): 243-259. arXiv:astro-ph/0105491. Bibcode: 2001ApJ...559..243M. doi:10.1086/322395. ISSN0004-637X.
L. C. Ho, A. V. Filippenko, W. L. W. Sargent (1997). “A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies”. Astrophysical Journal Supplement112 (2): 315-390. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041.
harvard.edu
ui.adsabs.harvard.edu
Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. (September 2001). “The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope”. Astrophysical Journal (University of Chicago Press) 559 (1): 243-259. arXiv:astro-ph/0105491. Bibcode: 2001ApJ...559..243M. doi:10.1086/322395. ISSN0004-637X.
L. C. Ho, A. V. Filippenko, W. L. W. Sargent (1997). “A Search for "Dwarf" Seyfert Nuclei. III. Spectroscopic Parameters and Properties of the Host Galaxies”. Astrophysical Journal Supplement112 (2): 315-390. arXiv:astro-ph/9704107. Bibcode: 1997ApJS..112..315H. doi:10.1086/313041.
worldcat.org
search.worldcat.org
Macri, L. M.; Stetson, P. B.; Bothun, G. D.; Freedman, W. L.; Garnavich, P. M.; Jha, S.; Madore, B. F.; Richmond, M. W. (September 2001). “The Discovery of Cepheids and a New Distance to NGC 2841 Using the Hubble Space Telescope”. Astrophysical Journal (University of Chicago Press) 559 (1): 243-259. arXiv:astro-ph/0105491. Bibcode: 2001ApJ...559..243M. doi:10.1086/322395. ISSN0004-637X.