@article{oai:ipsj.ixsq.nii.ac.jp:00008152,
 author = {渡辺, 茂 and Watanabe, Shigeru},
 issue = {9},
 journal = {情報処理},
 month = {Sep},
 title = {4記号5状態の万能TURING機械},
 volume = {13},
 year = {1972}
}