R. Punongbayan

Radon anomaly in the soil of Taal volcano, the Philippines: A likely precursor of the M 7.1 Mindoro earthquake (1994)

J. Sabroux, P. Richon, J. Vandemeulebrouck, 2003 .

Origin of high field strength element enrichment in the Sulu Arc, southern Philippines, revisited

R. Solidum, P. Castillo, R. Punongbayan, 2002 .

Mayon volcano, Philippines: change of monitoring strategy after microgravity and GPS measurements from 1992 to 1996

Günter Seeber, Ulrich Schreiber, Gerhard Jentzsch, 2001 .