@misc{indiciae29be9186193b,
  title = {Time-series photographs of the sea floor in western Massachusetts Bay: May 1999 to September 1999; May 2000 to September 2000; and October 2001 to February 2002},
  author = {Bradford Butman and P. Soupy Alexander and Michael H. Bothner},
  year = {2004},
  doi = {10.3133/ds97},
  url = {https://pubs.usgs.gov/publication/ds97},
  note = {Source identifier: ds97}
}