Ducati, J. R. (2002). "Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues2237: 0. Bibcode: 2002yCat.2237....0D.Vizier catalog entry
Ducati, J. R. (2002). "Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues2237: 0. Bibcode: 2002yCat.2237....0D.Vizier catalog entry