@techreport{weko_36508_1, author = "加藤満左夫 and 倉橋和夫", title = "データ交換網の開発状況について", year = "1975", institution = "日本電信電話公社武蔵野電気通信研究所, 日本電信電話公社武蔵野電気通信研究所", number = "11(1975-DPS-001)", month = "jul" }