@article{MILNER,
  title = {A theory of type polymorphism in programming},
  journal = {Journal of Computer and System Sciences},
  volume = {17},
  number = {3},
  pages = {348-375},
  year = {1978},
  issn = {0022-0000},
  doi = {https://doi.org/10.1016/0022-0000(78)90014-4},
  url = {www.sciencedirect.com/science/article/pii/0022000078900144},
  author = {Robin Milner},
}

@inproceedings{REMY,
  title={Extension of ML type system with a sorted equation theory on types},
  author={Didier R{\'e}my},
  year={1992},
  url={https://api.semanticscholar.org/CorpusID:117549268}
}