@misc{W2116424792,
  author = {Bernard Widrow and Michael A. Lehr},
  title = {30 years of adaptive neural networks: perceptron, Madaline, and backpropagation},
  year = {1990},
  howpublished = {Proceedings of the IEEE},
  doi = {https://doi.org/10.1109/5.58323}
}