@techreport{weko_19690_1, author = "八木,哲 and 高橋,直久", title = "オープンな協調型データベースの構成法", year = "2000", institution = "NTT未来ねっと研究所, NTT未来ねっと研究所", number = "69(2000-DBS-122)", month = "jul" }