@article{oai:tsukuba.repo.nii.ac.jp:00034462,
 author = {吉田, 健一 and YOSHIDA, Kenichi and 元田, 浩},
 issue = {4},
 journal = {人工知能学会誌, Journal of Japanese Society for Artificial Intelligence},
 month = {Jul},
 pages = {447--455},
 title = {階層的定性推論のための浅い知識の合成法},
 volume = {4},
 year = {1989},
 yomi = {ヨシダ, ケンイチ}
}