Pasquini, L.; de Medeiros, J. R.; Girardi, L. (2000). "Ca II activity and rotation in F-K evolved stars". Astronomy and Astrophysics. 361: 1011–1022. आर्काइव:astro-ph/0008109. बिबकोड:2000A&A...361.1011P.
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Buscombe, W.; Kennedy, P. M. (1968), "Stellar radial velocities from coudé spectrograms", Monthly Notices of the Royal Astronomical Society, 139: 341–346, बिबकोड:1968MNRAS.139..341B, डीओआई:10.1093/mnras/139.3.341{{citation}}: CS1 maint: unflagged free DOI (link)
Pasquini, L.; de Medeiros, J. R.; Girardi, L. (2000). "Ca II activity and rotation in F-K evolved stars". Astronomy and Astrophysics. 361: 1011–1022. आर्काइव:astro-ph/0008109. बिबकोड:2000A&A...361.1011P.