Variable stars in the open cluster NGC 6791 and its surrounding fieldF. De Marchi, E. Poretti, M. Montalto, G. Piotto, S. Desidera, L. R. Bedin, R. Claudi, A. Arellano Ferro, H. Bruntt and P. B. StetsonA&A, 471 2 (2007) 515-526DOI: https://doi.org/10.1051/0004-6361:20077386
