VizieR online Data Catalogue associated with article published in journal Astronomical Journal (AAS) with title 'RR Lyrae variables in two fields in the spheroid of M31.' (bibcode: 2009AJ....138..184S)
Sarajedini, A., Mancone, C. L., Lauer, T. R., Dressler, A., Freedman, W., Trager, S. C., Grillmair, C. & Mighell, K. J., jul.-2009, In: The Astronomical Journal.138, 1, blz. 184-19512 blz.
Sarajedini, A. (Contributor), Mancone, C. L. (Contributor), Lauer, T. R. (Contributor), Dressler, A. (Contributor), Freedman, W. (Contributor), Trager, S. (Contributor), Grillmair, C. (Contributor), Mighell, K. J. (Contributor) (28-dec.-2011). RR Lyrae variables in 2 fields in M31 spheroid. University of Groningen. 10.26093/cds/vizier.51380184