@misc{indiciae88aac1402020,
  title = {Sea floor image maps showing topography, sun-illuminated topography, backscatter intensity, ruggedness, slope, and the distribution of boulder ridges and bedrock outcrops in the Stellwagen Bank National Marine Sanctuary region off Boston, Massachusetts},
  author = {Page C. Valentine and Jessica L. Baker and Tanya S. Unger and Lian A. Scully and Sarah J. Fuller},
  year = {2005},
  doi = {10.3133/sim2840},
  url = {https://pubs.usgs.gov/publication/sim2840},
  note = {Source identifier: sim2840}
}