Kees Linthout, and Arnout Jan Everts. “The Flow-Banded Rhyolite Dome of San Bartolome (Alcoroches, Guadalajara), a Novelty for Spain”. Netherlands Journal of Geosciences, vol. 71, Jan. 1992, pp. 33-37, https://njgjournal.nl/index.php/njg/article/view/12527.