TY - RPRT TI - Optimizing correlation techniques for improved earthquake location AU - David P. Schaff AU - G. H. R. Bokelmann AU - William L. Ellsworth AU - E. Zanzerkia AU - Felix Waldhauser AU - Gregory C. Beroza PY - 2004 DO - 10.1785/0120020238 UR - https://pubs.usgs.gov/publication/70026856 ID - 70026856 ER -