M. Durand, G. Cassinis, and A. Ronchi, “Remarks on the Permian-Triassic transition in Central and Eastern Lombardy (Southern Alps, Italy)”, JIGE, vol. 33, no. 2, pp. 143–162, Jan. 2007, Accessed: Nov. 27, 2024. Available: https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0707210143A