@article{boltzmann1985,
  author    = {David H. Ackley and
               Geoffrey E. Hinton and
               Terrence J. Sejnowski},
  title     = {A Learning Algorithm for Boltzmann Machines},
  journal   = {Cognitive Science},
  volume    = {9},
  number    = {1},
  year      = {1985},
  pages     = {147--169},
}