@article{dijkstra1959,
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  year = {1959},
  doi = {10.1007/BF01386390},
  note = {doi: 10.1007/BF01386390}
}

@article{lecun1998,
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  title = {Gradient-based learning applied to document recognition},
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  month = nov,
  year = {1998},
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  note = {doi: 10.1109/5.726791}
}