Rolet, J.; Jegouzo, P.; Ledru, P.; Wyns, R. (1994). "Intracontinental Hercynian Events in the Armorican Massif". Pre-Mesozoic Geology in France and Related Areas. pp. 195–219. doi:10.1007/978-3-642-84915-2_20. ISBN978-3-642-84917-6. {{cite book}}: |journal= ignored (help)