Lesh, Janet Rountree (tháng 12 năm 1968). “The Kinematics of the Gould Belt: an Expanding Group?”. Astrophysical Journal Supplement. 17: 371. Bibcode:1968ApJS...17..371L. doi:10.1086/190179.
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. Bibcode:2002yCat.2237....0D.
Lesh, Janet Rountree (tháng 12 năm 1968). “The Kinematics of the Gould Belt: an Expanding Group?”. Astrophysical Journal Supplement. 17: 371. Bibcode:1968ApJS...17..371L. doi:10.1086/190179.
Samus, N. N.; Durlevich, O. V.; và đồng nghiệp (2009). “General Catalogue of Variable Stars”. VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
Hoffleit, D.; Warren, W. H. (1995). “VizieR Online Data Catalog: Bright Star Catalogue”. VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H (ấn bản thứ 5). 5050. Bibcode:1995yCat.5050....0H.