B. Lunenschloss, U. Bayer, and Ph. Muchez. 1997. “Coalification Anomalies Induced by Fluid Flow at the Variscan Thrust Front: A Numerical Model of the Palaeotemperature Field”. Netherlands Journal of Geosciences 76 (January):271-75. https://njgjournal.nl/index.php/njg/article/view/12349.