Explaining two circumnuclear star forming rings in NGC 5248 T. P. R. van der Laan, E. Schinnerer, E. Emsellem, S. Meidt, G. Dumas, T. Böker, L. Hunt, S. Haan, C. Mundell and H. Wozniak A&A, 556 (2013) A98 Published online: 02 August 2013 DOI: 10.1051/0004-6361/201321572