@techreport{weko_39992_1,
   author	 = "柳井朗人",
   title	 = "わが国の情報通信サービスの歴史と展望",
   year 	 = "1985",
   institution	 = "AT&T. I. J.",
   number	 = "75(1984-IS-004)",
   month	 = "mar"
}