The distribution of the elements in the thin disc from classical Cepheids B. Lemasle, V.V. Kovtyukh, P. François, G. Bono, C.D. Laney, A. Piersimoni, S. Pedicelli, F. Primas and M. Romaniello EPJ Web of Conferences, 19 (2012) 05010 Published online: 07 February 2012 DOI: 10.1051/epjconf/20121905010