@article{oai:ismrepo.ism.ac.jp:00033088,
 author = {菅原, 正巳 and Sugawara, Masami},
 issue = {10},
 journal = {統計数理研究所講究録},
 month = {Jan},
 pages = {406--415},
 title = {観測値の一部が使えない場合の推定について},
 volume = {5},
 year = {1950}
}