1. Abdel-Monem, A., Fernandez, L. A., & Boone, G. M. (1968). Pliocene-Pleistocene minimum K-Ar ages of the older eruptive centers, Eastern Azores. Transactions America Geophysics Union, 49(1), 363.
2. Abdel-Monem, A. A., Fernandez, L. A., & Boone, G. M. (1975). K-Ar ages from the Eastern Azores group (Santa Maria, São Miguel and the Formigas Islands). Lithos, 8, 247–254.
3. Agostinho, J. (1937). Volcanic activity in the Azores, Report for 1933–1936. Bulletin of Volcanology, 2(11), 183–192.
4. Albarède, F. (1992). How deep do common basaltic magmas form and differentiate? Journal of Geophysical Research: Solid Earth, 97(B7), 10997–11009.
5. Allan, J. F., & Dick, H. J. (1996). Cr-rich spinel as a tracer for melt migration and melt-wall rock interaction in the mantle: Hess Deep, leg 147. In C. Mevel, K. M. Gillis, J. F. Allan, & P. S. Meyer (Eds.), Proceedings of the Ocean Drilling Program, Scientific Results, 147 (pp. 157–172). College Station, TX: Ocean Drilling Program.