@misc{indiciae62502af731fa,
  title = {Seismicity map of the state of Massachusetts},
  author = {C. W. Stover and L.M. Barnhard and B.G. Reagor and S. T. Algermissen},
  year = {1980},
  doi = {10.3133/mf856},
  url = {https://pubs.usgs.gov/publication/mf856},
  note = {Source identifier: mf856}
}