@misc{indiciaeb34ae5d20a74,
  title = {Optimization techniques for integrating spatial data},
  author = {U.C. Herzfeld and D. F. Merriam},
  year = {1995},
  doi = {10.1007/bf02093901},
  url = {https://pubs.usgs.gov/publication/70018947},
  note = {Source identifier: 70018947}
}