HO, LUIS C.; SARZI, MARC; RIX, HANS-WALTER; SHIELDS, JOSEPH C.; RUDNICK, GREG Publications of the Astronomical Society of the Pacific, 114, 792, 30-10-2001, pàg. 137–143. arXiv: astro-ph/0110671. DOI: 10.1086/338546.
HO, LUIS C.; SARZI, MARC; RIX, HANS-WALTER; SHIELDS, JOSEPH C.; RUDNICK, GREG Publications of the Astronomical Society of the Pacific, 114, 792, 30-10-2001, pàg. 137–143. arXiv: astro-ph/0110671. DOI: 10.1086/338546.