@inproceedings{oai:ipsj.ixsq.nii.ac.jp:00237454,
 book = {第30回プログラミング・シンポジウム報告集},
 month = {Jan},
 publisher = {情報処理学会},
 title = {中表紙},
 volume = {1989},
 year = {1989}
}