Discovery, photometry, and astrometry of 49 classical nova candidates in M 81 galaxy K. Hornoch, P. Scheirich, P. M. Garnavich, S. Hameed and D. A. Thilker A&A, 492 1 (2008) 301-317 Published online: 01 October 2008 DOI: 10.1051/0004-6361:200809592