TY - RPRT TI - Graphical and PC-software analysis of volcano eruption precursors according to the Materials Failure Forecast Method (FFM) AU - Reinold R. Cornelius AU - Barry Voight PY - 1995 DO - 10.1016/0377-0273(94)00078-u UR - https://pubs.usgs.gov/publication/70248334 ID - 70248334 ER -