@misc{W2035929826,
  author = {Elwyn R. Berlekamp and Robert J. McEliece and H. van Tilborg},
  title = {On the inherent intractability of certain coding problems (Corresp.)},
  year = {1978},
  howpublished = {IEEE Transactions on Information Theory},
  doi = {https://doi.org/10.1109/tit.1978.1055873}
}