CARDU, Marilena; ZOPPO, Giuliano. Dimension stone exploitation in the Ossola Basin, Italy. Journal of Nepal Geological Society, [S. l.], v. 22, p. 77–84, 2000. DOI: 10.3126/jngs.v22i0.32313. Disponível em: https://nepjol.info/index.php/JNGS/article/view/32313. Acesso em: 15 jan. 2025.