Fahed, R., & Stahl, O. (2011). Spectroscopic follow-up of the colliding-wind binary WR 140 during the 2009 January periastron passage. Proceedings of the International Astronomical Union, 6(S272), . https://doi.org/10.1017/S1743921311011173
Chicago Style (17th ed.) CitationFahed, Remi, and Otmar Stahl. "Spectroscopic Follow-up of the Colliding-wind Binary WR 140 During the 2009 January Periastron Passage." Proceedings of the International Astronomical Union 6, no. S272 (2011). https://doi.org/10.1017/S1743921311011173.
MLA (9th ed.) CitationFahed, Remi, and Otmar Stahl. "Spectroscopic Follow-up of the Colliding-wind Binary WR 140 During the 2009 January Periastron Passage." Proceedings of the International Astronomical Union, vol. 6, no. S272, 2011, https://doi.org/10.1017/S1743921311011173.