TY - RPRT TI - Temporal and spectral characteristics of seismicity observed at Popocatepetl volcano, central Mexico AU - A. Arciniega-Ceballos AU - C. Valdes-Gonzalez AU - P. Dawson PY - 2000 DO - 10.1016/s0377-0273(00)00188-8 UR - https://pubs.usgs.gov/publication/70022420 ID - 70022420 ER -