Using Cepheids to determine the galactic abundance gradient - I. The solar neighbourhoodS. M. Andrievsky, V. V. Kovtyukh, R. E. Luck, J. R. D. Lépine, D. Bersier, W. J. Maciel, B. Barbuy, V. G. Klochkova, V. E. Panchuk and R. U. KarpischekA&A, 381 1 (2002) 32-50DOI: https://doi.org/10.1051/0004-6361:20011488