@misc{W2154952480,
  author = {Anselm Blumer and Andrzej Ehrenfeucht and David Haussler and Manfred K. Warmuth},
  title = {Learnability and the Vapnik-Chervonenkis dimension},
  year = {1989},
  howpublished = {Journal of the ACM},
  doi = {https://doi.org/10.1145/76359.76371}
}