A Star in the M31 Giant Stream: The Highest Negative Stellar Velocity KnownDOI: info:10.1088/0004-6256/139/2/372v. 139372–377
Caldwell, Nelson, Morrison, Heather, Kenyon, Scott J., Schiavon, Ricardo, Harding, Paul, and Rose, James A. 2010. "A Star in the M31 Giant Stream: The Highest Negative Stellar Velocity Known." The Astronomical Journal, 139 372–377. https://doi.org/10.1088/0004-6256/139/2/372.