A Period Distribution of X-Ray Binaries Observed in the Central Region of M31 with Chandra and the Hubble Space TelescopeDOI: info:10.1088/0004-637X/756/1/32v. 75632
Barnard, R., Galache, J. L., Garcia, M. R., Nooraee, N., Callanan, P. J., Zezas, Andreas, and Murray, Stephen S. 2012. "A Period Distribution of X-Ray Binaries Observed in the Central Region of M31 with Chandra and the Hubble Space Telescope." The Astrophysical Journal, 756 32. https://doi.org/10.1088/0004-637X/756/1/32.