TY - RPRT TI - Potential duration of aftershocks of the 2020 southwestern Puerto Rico earthquake AU - Nicholas van der Elst AU - Jeanne L. Hardebeck AU - Andrew J. Michael PY - 2020 DO - 10.3133/ofr20201009 UR - https://pubs.usgs.gov/publication/ofr20201009 ID - ofr20201009 ER -