(en) Daniela Villegas, Andrés Jordán, Eric W. Penget al., « The ACS Fornax cluster Survey. VIII. The Luminosity function of Globular Clusters in Virgo and Fornax early-type galaxies and its use as a distance indicator », The Astrophysical Journal, vol. 717, no 2, , p. 603-616 (lire en ligne)DOI10.1088/0004-637X/717/2/603
(en) Daniela Villegas, Andrés Jordán, Eric W. Penget al., « The ACS Fornax cluster Survey. VIII. The Luminosity function of Globular Clusters in Virgo and Fornax early-type galaxies and its use as a distance indicator », The Astrophysical Journal, vol. 717, no 2, , p. 603-616 (lire en ligne)DOI10.1088/0004-637X/717/2/603