@inproceedings{ijcai1971p32,
  title     = {Recognition of Hand-Printed Numerals Reduced to Graph-Representable Form},
  author    = {Watt, A. H. and Beurle, R. L.},
  booktitle = {Proceedings of the Second International Joint Conference on
               Artificial Intelligence, {IJCAI-71}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {D.C. Cooper},
  pages     = {322--331},
  year      = {1971},
  url       = {https://ijcai.org/proceedings/1971/32},
}