Robert Kennicutt; Daniela Calzetti; David Cook; Charles Engelbracht; Janice Lee; Daniel Dale; Shawn M. Staudaher; Liese van Zee; Benjamin D. Johnson (septembrie 2014). „The Spitzer Local Volume Legacy (LVL) global optical photometry”. Monthly Notices of the Royal Astronomical Society (în engleză). 445 (1): 881–889. arXiv:1408.1130. Bibcode:2014MNRAS.445..881C. doi:10.1093/MNRAS/STU1580. WikidataQ59784338.
Robert Kennicutt; Daniela Calzetti; David Cook; Charles Engelbracht; Janice Lee; Daniel Dale; Shawn M. Staudaher; Liese van Zee; Benjamin D. Johnson (septembrie 2014). „The Spitzer Local Volume Legacy (LVL) global optical photometry”. Monthly Notices of the Royal Astronomical Society (în engleză). 445 (1): 881–889. arXiv:1408.1130. Bibcode:2014MNRAS.445..881C. doi:10.1093/MNRAS/STU1580. WikidataQ59784338.
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
Robert Kennicutt; Daniela Calzetti; David Cook; Charles Engelbracht; Janice Lee; Daniel Dale; Shawn M. Staudaher; Liese van Zee; Benjamin D. Johnson (septembrie 2014). „The Spitzer Local Volume Legacy (LVL) global optical photometry”. Monthly Notices of the Royal Astronomical Society (în engleză). 445 (1): 881–889. arXiv:1408.1130. Bibcode:2014MNRAS.445..881C. doi:10.1093/MNRAS/STU1580. WikidataQ59784338.
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
Robert Kennicutt; Daniela Calzetti; David Cook; Charles Engelbracht; Janice Lee; Daniel Dale; Shawn M. Staudaher; Liese van Zee; Benjamin D. Johnson (septembrie 2014). „The Spitzer Local Volume Legacy (LVL) global optical photometry”. Monthly Notices of the Royal Astronomical Society (în engleză). 445 (1): 881–889. arXiv:1408.1130. Bibcode:2014MNRAS.445..881C. doi:10.1093/MNRAS/STU1580. WikidataQ59784338.