@article{oai:ismrepo.ism.ac.jp:00033114,
 author = {青山, 博次郎 and Aoyama, Hirojiro},
 issue = {12},
 journal = {統計数理研究所講究録},
 month = {Mar},
 pages = {491--496},
 title = {観測値の組分けについて},
 volume = {5},
 year = {1950}
}