Durand, M., G. Cassinis, y A. Ronchi. «Reply to discussion on the article “Remarks on the Permian- Triassic transition in Central and Eastern Lombardy (Southern Alps, Italy)” by G. Cassinis, M. Durand and A. Ronchi». Journal of Iberian Geology 35, no. 1 (marzo 24, 2009): 73–78. Accedido julio 22, 2026. https://revistas.ucm.es/index.php/JIGE/article/view/JIGE0909120073A.