Convective core mixing: A metallicity dependence? D. Cordier, Y. Lebreton, M.-J. Goupil, T. Lejeune, J.-P. Beaulieu and F. Arenou A&A, 392 1 (2002) 169-180 Published online: 22 August 2002 DOI: 10.1051/0004-6361:20020934