1RXS J173021.5-055933: a cataclysmic variable with a fast-spinning magnetic white dwarf D. de Martino, G. Matt, K. Mukai, J.-M. Bonnet-Bidaud, M. Falanga, B. T. Gänsicke, F. Haberl, T. R. Marsh, M. Mouchet, S. P. Littlefair and V. Dhillon A&A, 481 1 (2008) 149-159 Published online: 04 February 2008 DOI: 10.1051/0004-6361:20078368