Spampinato, L., Salerno, G. G., Martin, R. S., Sawyer, G. M., Oppenheimer, C., Ilyinskaya, E., & Ramírez, C. (2009). Thermal and geochemical signature of Poás Volcano, Costa Rica (MARCH 2009).

Spampinato, Letizia, Giuseppe G. Salerno, Robert S. Martin, Georgina M. Sawyer, Clive Oppenheimer, Evgenia Ilyinskaya, ja Carlos Ramírez. Thermal and Geochemical Signature of Poás Volcano, Costa Rica (MARCH 2009). 2009.

Spampinato, Letizia, et al. Thermal and Geochemical Signature of Poás Volcano, Costa Rica (MARCH 2009). 2009.