Normal galaxies in the XMM-Newton fields - X-rays as a star formation indicator E. Rovilos, I. Georgantopoulos, P. Tzanavaris, M. Pracy, M. Whiting, D. Woods and C. Goudis A&A, 502 1 (2009) 85-90 Published online: 27 May 2009 DOI: 10.1051/0004-6361/200912053