@techreport{weko_35309_1,
   author	 = "長田,弘康",
   title	 = "将来の鉄道通信のイメージ",
   year 	 = "1997",
   institution	 = "（財）鉄道総合技術研究所",
   number	 = "87(1997-DPS-084)",
   month	 = "sep"
}