GaBoDS: The Garching-Bonn Deep Survey - I. Anatomy of galaxy clusters in the background of NGC 300M. Schirmer, T. Erben, P. Schneider, G. Pietrzynski, W. Gieren, S. Carpano, A. Micol and F. PierfedericiA&A, 407 3 (2003) 869-888DOI: https://doi.org/10.1051/0004-6361:20031026