3 Garrido, M. De Oliveira Cardoso, G. Marques Dias, M. Franco, D. Cura, S. Grimaldi, S. Oosterbeek, L. Rosina, P. 2006 Luminescence dating of a fluvial deposit sequence: Ribeira da Ponte da Pedra – Middle Tagus Valley International Colloquium 69 “Luminescence Dating Techniques: a User’s Perspective Lisboa 4-9 september 2006 datazione, luminescenza, portogallo