Frink, Sabine; Mitchell, David S.; Quirrenbach, Andreas; Fischer, Debra A.; Marcy, Geoffrey W.; Butler, R. Paul (2002). “Discovery of a Substellar Companion to the K2 III Giant ι Draconis”. The Astrophysical Journal576 (1): 478-484. doi:10.1086/341629. ISSN0004-637X.
Butler, R. P.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al. (2006). “Catalog of Nearby Exoplanets”. The Astrophysical Journal646 (1): 505-522. doi:10.1086/504701. ISSN0004-637X.
Frink, Sabine; Mitchell, David S.; Quirrenbach, Andreas; Fischer, Debra A.; Marcy, Geoffrey W.; Butler, R. Paul (2002). “Discovery of a Substellar Companion to the K2 III Giant ι Draconis”. The Astrophysical Journal576 (1): 478-484. doi:10.1086/341629. ISSN0004-637X.
Butler, R. P.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al. (2006). “Catalog of Nearby Exoplanets”. The Astrophysical Journal646 (1): 505-522. doi:10.1086/504701. ISSN0004-637X.