L.M. Kriegsman, D.G.A.M. Aerden, R.J. Bakker, S.W.J. den Brok and P.M.T.M. Schutjens (1989) “Variscan tectonometamorphic evolution of the eastern Lys-Caillaouas massif, Central Pyrenees - evidence for late orogenic extension prior to peak metamorphism”, Netherlands Journal of Geosciences, pp. 323-333. Available at: https://njgjournal.nl/index.php/njg/article/view/12913 (Accessed: 29March2026).