@misc{indiciae88a58b83ad0f,
  title = {Training a single sigmoidal neuron is hard.},
  author = {Jirí Síma},
  year = {2002},
  doi = {10.1162/089976602760408035},
  url = {https://pubmed.ncbi.nlm.nih.gov/12433296/},
  note = {Source identifier: 12433296}
}