@article{oai:ismrepo.ism.ac.jp:00033190,
 author = {山本, 純恭 and Yamamoto, Sumiyasu},
 issue = {9},
 journal = {統計数理研究所講究録},
 month = {Dec},
 pages = {396--407},
 title = {OPTIMUMなCRITICAL REGIONに就て},
 volume = {6},
 year = {1950}
}