@article{oai:dokkyo.repo.nii.ac.jp:00000246,
 author = {藤山, 英樹 and Fujiyama, Hideki},
 issue = {2},
 journal = {情報学研究, Journal of Informatics},
 month = {Feb},
 pages = {84--91},
 title = {ボナチッチの2つの中心性概念について},
 year = {2013}
}