L.M. Kriegsman, D.G.A.M. Aerden, R.J. Bakker, S.W.J. den Brok, and P.M.T.M. Schutjens. “Variscan Tectonometamorphic Evolution of the Eastern Lys-Caillaouas Massif, Central Pyrenees - Evidence for Late Orogenic Extension Prior to Peak Metamorphism”. Netherlands Journal of Geosciences (January 1, 1989): 323-333. Accessed March 30, 2026. https://njgjournal.nl/index.php/njg/article/view/12913.