@article{oai:ismrepo.ism.ac.jp:00032861,
 author = {坂元, 平八 and Sakamoto, Heihachi},
 issue = {3},
 journal = {統計数理研究所講究録},
 month = {Aug},
 pages = {67--76},
 title = {統計量の独立性と自由度の問題},
 volume = {1},
 year = {1944}
}