The dynamical and chemical evolution of dwarf spheroidal galaxies Y. Revaz, P. Jablonka, T. Sawala, V. Hill, B. Letarte, M. Irwin, G. Battaglia, A. Helmi, M. D. Shetrone, E. Tolstoy and K. A. Venn A&A, 501 1 (2009) 189-206 Published online: 05 May 2009 DOI: 10.1051/0004-6361/200911734