@article{oai:ismrepo.ism.ac.jp:00032521,
 author = {大隅, 昇 and 渋谷, 政昭 and Ohsumi, Noboru and Shibuya, Masaaki},
 issue = {1},
 journal = {統計数理研究所彙報},
 month = {Mar},
 pages = {41--63},
 title = {数値的地域区分法：NTAP},
 volume = {25},
 year = {1978}
}