A comprehensive analysis of the cool RCB star DY Persei L. Začs, S. Mondal, W. P. Chen, A. F. Pugach, F. A. Musaev and O. Alksnis A&A, 472 1 (2007) 247-256 Published online: 02 July 2007 DOI: 10.1051/0004-6361:20066923