Tuthill, Peter G.; Monnier, John D.; Danchi, William C.; Turner, Nils H. (2003). “High-resolution near-IR imaging of the WCd(+OB) environments: Pinwheels”. Proceedings of the 212th International Union of Astronomy Symposium 212. tr. 121. Bibcode:2003IAUS..212..121T.
Dougherty, S. M.; Beasley, A. J.; Claussen, M. J.; Zauderer, B. A.; Bolingbroke, N. J. (2005). “High-Resolution Radio Observations of the Colliding-Wind Binary WR 140”. The Astrophysical Journal 623: 447–459. Bibcode:2005ApJ...623..447D. arXiv:astro-ph/0501391. doi:10.1086/428494.
