Ground-based CCD astrometry with wide field imagers - III. WFI@2.2m proper-motion catalog of the globular cluster ω CentauriA. Bellini, G. Piotto, L. R. Bedin, J. Anderson, I. Platais, Y. Momany, A. Moretti, A. P. Milone and S. OrtolaniA&A, 493 3 (2009) 959-978DOI: https://doi.org/10.1051/0004-6361:200810880
