Fekel, Francis C.; Tomkin, Jocelyn (1993), "The Spectroscopic Orbit of Gamma Geminorum and a Search for its Secondary", Astronomical Journal, 106: 1156, Bibcode:1993AJ....106.1156F, doi:10.1086/116714
Adelman, Saul J.; Philip, A. G. Davis (December 1994), "Elemental abundances of the B and A stars. 2: Gamma Geminorum, HD 60825, 7 Sextantis, HR 4817, and HR 5780", Publications of the Astronomical Society of the Pacific, 106 (706): 1239–1247, Bibcode:1994PASP..106.1239A, doi:10.1086/133501, S2CID122551112
Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
Gutierrez-Moreno, Adelina; et al. (1966), "A System of photometric standards", Publ. Dept. Astron. Univ. Chile, 1, Publicaciones Universidad de Chile, Department de Astronomy: 1–17, Bibcode:1966PDAUC...1....1G
Fekel, Francis C.; Tomkin, Jocelyn (1993), "The Spectroscopic Orbit of Gamma Geminorum and a Search for its Secondary", Astronomical Journal, 106: 1156, Bibcode:1993AJ....106.1156F, doi:10.1086/116714
Evans, D. S. (June 20–24, 1966), "The Revision of the General Catalogue of Radial Velocities", in Batten, Alan Henry; Heard, John Frederick (eds.), Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, vol. 30, University of Toronto: International Astronomical Union, p. 57, Bibcode:1967IAUS...30...57E
Malagnini, M. L.; Morossi, C. (November 1990), "Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars", Astronomy and Astrophysics Supplement Series, 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M
Adelman, Saul J.; Philip, A. G. Davis (December 1994), "Elemental abundances of the B and A stars. 2: Gamma Geminorum, HD 60825, 7 Sextantis, HR 4817, and HR 5780", Publications of the Astronomical Society of the Pacific, 106 (706): 1239–1247, Bibcode:1994PASP..106.1239A, doi:10.1086/133501, S2CID122551112
Cowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications", Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
Adelman, Saul J.; Philip, A. G. Davis (December 1994), "Elemental abundances of the B and A stars. 2: Gamma Geminorum, HD 60825, 7 Sextantis, HR 4817, and HR 5780", Publications of the Astronomical Society of the Pacific, 106 (706): 1239–1247, Bibcode:1994PASP..106.1239A, doi:10.1086/133501, S2CID122551112