Improving Feature Extraction in the Automatic Classification of Seismic Events. Application to Colima and Arenal Volcanoes. - Isaac Álvarez; Guillermo Cortés; Ángel de la Torre; M. Carmen Benítez; Luz García 001; Philippe Lesage; Raúl Arámbula; Miguel González-Amezcua (IGARSS (4), 2009)