[1]
R.T. Van Balen, J.M. Verweij, J.D. van Wees, H. Simmelink, F. Van Bergen and H. Pagnier 2002. Deep subsurface temperatures in the Roer Valley Graben and the Peelblock, the Netherlands - new results. Netherlands Journal of Geosciences. 81, (Mar. 2002), 19-26. DOI:https://doi.org/10.1017/S0016774600020539.