Knyazeva, L. N; Kharitonov, A. V (2000). «The Normal Energy Distributions in Stellar Spectra: Giants and Supergiants». Astronomy Reports. 44 (8). 548 páginas. Bibcode:2000ARep...44..548K. doi:10.1134/1.1306355
Ducati, J. R. (2002). «VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system». CDS/ADC Collection of Electronic Catalogues. 2237. 0 páginas. Bibcode:2002yCat.2237....0D
Knyazeva, L. N; Kharitonov, A. V (2000). «The Normal Energy Distributions in Stellar Spectra: Giants and Supergiants». Astronomy Reports. 44 (8). 548 páginas. Bibcode:2000ARep...44..548K. doi:10.1134/1.1306355