Hanneke Paulssen, Bernard Dost, and Torild van Eck. 1992. “The April 13, 1992 Earthquake of Roermond (The Netherlands); First Interpretation of the NARS Seismograms”. Netherlands Journal of Geosciences 71 (January):91-98. https://njgjournal.nl/index.php/njg/article/view/12534.