Kervella, Pierre; et al. (2019-03), “Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. I. Binarity from proper motion anomaly”, Astronomy & Astrophysics623: A116, Bibcode: 2019A&A...623A.116K, doi:10.1051/0004-6361/201834210
Luck, R. E.; Andrievsky, S. M. (2004-07), “Phase-dependent Variation of the Fundamental Parameters of Cepheids. I. Periods from 6 to 10 Days”, Astronomical Journal128: 343-356, Bibcode: 2004AJ....128..343L, doi:10.1086/420991
Gallenne, A.; et al. (2019-02), “Multiplicity of Galactic Cepheids from long-baseline interferometry. IV. New detected companions from MIRC and PIONIER observations”, Astronomy & Astrophysics622: A164, Bibcode: 2019A&A...622A.164G, doi:10.1051/0004-6361/201834614
Curtiss, Ralph H. (1904-10), “I. A method of measurement and reduction of spectrograms for the determination of radial velocities. II. Application to a study of the variable star W Sagittarii.”, Astrophysical Journal20 (3): 149-187, Bibcode: 1904ApJ....20..149C, doi:10.1086/141149
See, T. J. J. (1898-03-28), “First catalogue of new double and multiple stars in the southern hemisphere, discovered at the Lowell Observatory”, Astronomical Journal18 (431-432): 188-218, Bibcode: 1898AJ.....18..188S, doi:10.1086/102882
Kervella, Pierre; et al. (2019-03), “Multiplicity of Galactic Cepheids and RR Lyrae stars from Gaia DR2. I. Binarity from proper motion anomaly”, Astronomy & Astrophysics623: A116, Bibcode: 2019A&A...623A.116K, doi:10.1051/0004-6361/201834210
Luck, R. E.; Andrievsky, S. M. (2004-07), “Phase-dependent Variation of the Fundamental Parameters of Cepheids. I. Periods from 6 to 10 Days”, Astronomical Journal128: 343-356, Bibcode: 2004AJ....128..343L, doi:10.1086/420991
Gallenne, A.; et al. (2019-02), “Multiplicity of Galactic Cepheids from long-baseline interferometry. IV. New detected companions from MIRC and PIONIER observations”, Astronomy & Astrophysics622: A164, Bibcode: 2019A&A...622A.164G, doi:10.1051/0004-6361/201834614
Curtiss, Ralph H. (1904-10), “I. A method of measurement and reduction of spectrograms for the determination of radial velocities. II. Application to a study of the variable star W Sagittarii.”, Astrophysical Journal20 (3): 149-187, Bibcode: 1904ApJ....20..149C, doi:10.1086/141149
See, T. J. J. (1898-03-28), “First catalogue of new double and multiple stars in the southern hemisphere, discovered at the Lowell Observatory”, Astronomical Journal18 (431-432): 188-218, Bibcode: 1898AJ.....18..188S, doi:10.1086/102882