Takeda, Genya et al.: Structure and Evolution of Nearby Stars with Planets II. Physical Properties of ~1000 Cool Stars from the SPOCS Catalog. arxiv:0904.0819.
Johnson Marshall et al.: A 12-Year Activity Cycle for HD 219134. arxiv:1602.05200.
Cumming, A. et al.: The Lick Planet Search: Detectability and Mass Thresholds. arxiv:astro-ph/9906466.
Motalebi, F. et al.: The HARPS-N Rocky Planet Search I. HD219134b: A transiting rocky planet in a multi-planet system at 6.5 pc from the Sun. arxiv:1507.08532.
Steven S. Vogt et al.: A Six-Planet System Orbiting HD 219134. arxiv:1509.07912.
Michael Gillon et al.: Two massive rocky planets transiting a K-dwarf 6.5 parsecs away. arxiv:1703.01430.
Frasca, A. et al.: REM near-IR and optical photometric monitoring of pre-main sequence stars in Orion. Rotation periods and starspot parameters. bibcode:2009A&A...508.1313F.