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). Universidad de Costa Rica.

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

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