Georges Paturel; Dubois P.; Petit C.; Woelfel F. (), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (în engleză), Bibcode:2002LEDA.........0P, WikidataQ66470150
Ginevra Trinchieri; Roberto Rampazzo; Anna Wolter; Antonietta Marino; P. Mazzei (). „Investigating early-type galaxy evolution with a multiwavelength approach – I. X-ray properties of 12 galaxies observed with Swift and XMM–Newton”. Monthly Notices of the Royal Astronomical Society (în engleză). 449 (3): 3021–3042. Bibcode:2015MNRAS.449.3021T. doi:10.1093/MNRAS/STV466. WikidataQ58984156.
Ginevra Trinchieri; Roberto Rampazzo; Anna Wolter; Antonietta Marino; P. Mazzei (). „Investigating early-type galaxy evolution with a multiwavelength approach – I. X-ray properties of 12 galaxies observed with Swift and XMM–Newton”. Monthly Notices of the Royal Astronomical Society (în engleză). 449 (3): 3021–3042. Bibcode:2015MNRAS.449.3021T. doi:10.1093/MNRAS/STV466. WikidataQ58984156.
Georges Paturel; Dubois P.; Petit C.; Woelfel F. (), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (în engleză), Bibcode:2002LEDA.........0P, WikidataQ66470150
Ginevra Trinchieri; Roberto Rampazzo; Anna Wolter; Antonietta Marino; P. Mazzei (). „Investigating early-type galaxy evolution with a multiwavelength approach – I. X-ray properties of 12 galaxies observed with Swift and XMM–Newton”. Monthly Notices of the Royal Astronomical Society (în engleză). 449 (3): 3021–3042. Bibcode:2015MNRAS.449.3021T. doi:10.1093/MNRAS/STV466. WikidataQ58984156.