K. Linthout, H. Paulick and J.R. Wijbrans 2009. Provenance of basalt blocks from Roman sites in Vleuten-De Meern (the Netherlands) traced to the Tertiary Siebengebirge (Germany): a geoarchaeological quest using petrological and geochemical methods. Netherlands Journal of Geosciences. 88, (Mar. 2009), 55 - 74. DOI:https://doi.org/10.1017/S0016774600000998.