T. van Eck and C.A. Davenport (1994) “Seismotectonics and seismic hazard in the Roer Valley Graben: an overview”, Netherlands Journal of Geosciences, 73, pp. 95-98. Available at: https://njgjournal.nl/index.php/njg/article/view/12454 (Accessed: 5April2026).