@misc{indiciae8013197337ac,
  title = {An improved robust hierarchical registration algorithm.},
  author = {M E Alexander and G Scarth and R L Somorjai},
  year = {1997},
  doi = {10.1016/s0730-725x(96)00384-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/9223052/},
  note = {Source identifier: 9223052}
}