Underhill, A. B. et al. (November 1979), “Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars”, Monthly Notices of the Royal Astronomical Society189: 601–605, Bibcode: 1979MNRAS.189..601U, doi:10.1093/mnras/189.3.601.
Knobel, E. B. (June 1895), “Al Achsasi Al Mouakket, on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket”, Monthly Notices of the Royal Astronomical Society55: 429–438, Bibcode: 1895MNRAS..55..429K, doi:10.1093/mnras/55.8.429.
Lesh, Janet Rountree (December 1968), “The Kinematics of the Gould Belt: an Expanding Group?”, Astrophysical Journal Supplement17: 371, Bibcode: 1968ApJS...17..371L, doi:10.1086/190179.
Underhill, A. B. et al. (November 1979), “Effective temperatures, angular diameters, distances and linear radii for 160 O and B stars”, Monthly Notices of the Royal Astronomical Society189: 601–605, Bibcode: 1979MNRAS.189..601U, doi:10.1093/mnras/189.3.601.
Knobel, E. B. (June 1895), “Al Achsasi Al Mouakket, on a catalogue of stars in the Calendarium of Mohammad Al Achsasi Al Mouakket”, Monthly Notices of the Royal Astronomical Society55: 429–438, Bibcode: 1895MNRAS..55..429K, doi:10.1093/mnras/55.8.429.
Lesh, Janet Rountree (December 1968), “The Kinematics of the Gould Belt: an Expanding Group?”, Astrophysical Journal Supplement17: 371, Bibcode: 1968ApJS...17..371L, doi:10.1086/190179.