Reference

L. Carmignani, G. Cortecci, Gabor Dessau, G. Duchi, G. Oggiano, P. Pertusati, M. Saitta (1978): The Antimony and Tungsten Deposit of Villasalto in South-Eastern Sardinia and its Relationship to Hercynian Tectonics – Verhandlungen der Geologischen Bundesanstalt – 1978: 273 - 278.