@article{oai:ismrepo.ism.ac.jp:00032959,
 author = {掛谷, 宗一 and Kakeya, Soichi},
 issue = {1-2},
 journal = {統計数理研究所講究録},
 month = {Apr},
 pages = {1--7},
 title = {選抜問題},
 volume = {3},
 year = {1947}
}