@inproceedings{ijcai1977p152,
  title     = {Between Regions and Objects - Surfaces and Volumes},
  author    = {Konolige, Kurt and York, Bryant W. and Hanson, Allen R. and Riseman, Edward M.},
  booktitle = {Proceedings of the Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-77}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Raj Reddy},
  pages     = {646--646},
  year      = {1977},
  note      = {Vision},
  url       = {https://ijcai.org/proceedings/1977/152},
}