Cole, Andrew A.; Tolstoy, Eline; Gallagher, John S., III; Hoessel, John G.; Mould, Jeremy R. «Stellar Populations at the Center of IC 1613». The Astronomical Journal, 118, 4, 1999, pàg. 1657–1670. arXiv: astro-ph/9905350. Bibcode: 1999AJ....118.1657C. DOI: 10.1086/301042.
Cole, Andrew A.; Tolstoy, Eline; Gallagher, John S., III; Hoessel, John G.; Mould, Jeremy R. «Stellar Populations at the Center of IC 1613». The Astronomical Journal, 118, 4, 1999, pàg. 1657–1670. arXiv: astro-ph/9905350. Bibcode: 1999AJ....118.1657C. DOI: 10.1086/301042.
Cole, Andrew A.; Tolstoy, Eline; Gallagher, John S., III; Hoessel, John G.; Mould, Jeremy R. «Stellar Populations at the Center of IC 1613». The Astronomical Journal, 118, 4, 1999, pàg. 1657–1670. arXiv: astro-ph/9905350. Bibcode: 1999AJ....118.1657C. DOI: 10.1086/301042.