@misc{W1972978214,
  author = {H. B. Mann and Douglas R. Whitney},
  title = {On a Test of Whether one of Two Random Variables is Stochastically Larger than the Other},
  year = {1947},
  howpublished = {The Annals of Mathematical Statistics},
  doi = {https://doi.org/10.1214/aoms/1177730491}
}