@article{weko_78159_1, author = "平塚,信明 and 石川,冬樹 and 本位田真一", title = "同種サービスの併用を考慮した効率的なサービス選択", journal = "情報処理学会論文誌", year = "2011", volume = "52", number = "10", pages = "2920--2933", month = "oct" }