La Monica, M., Rotolo, S.G. and Foresta Martin, F. 2019. Petrographic and spectroscopic (FT-IR) study of Western Mediterranean obsidians geological sources and of a lithic collection from Ustica Island (Sicily). Annals of Geophysics. 62, 1 (Jul. 2019), VO13. DOI:https://doi.org/10.4401/ag-8058.