The lower mass function of the young open cluster Blanco 1: from 30 M to 3 M E. Moraux, J. Bouvier, J. R. Stauffer, D. Barrado y Navascués and J.-C. Cuillandre A&A, 471 2 (2007) 499-513 Published online: 18 June 2007 DOI: 10.1051/0004-6361:20066308