TY - RPRT TI - A case study of two M ~5 mainshocks in Anza, California: Is the footprint of an aftershock sequence larger than we think? AU - Karen R. Fritts AU - Debi Kilb PY - 2009 DO - 10.1785/0120080268 UR - https://pubs.usgs.gov/publication/70037486 ID - 70037486 ER -