@misc{W4241727697,
  author = {Milton Friedman},
  title = {The Use of Ranks to Avoid the Assumption of Normality Implicit in the Analysis of Variance},
  year = {1937},
  howpublished = {Journal of the American Statistical Association},
  doi = {https://doi.org/10.1080/01621459.1937.10503522}
}