@techreport{weko_20614_1,
   author	 = "清木,康 and 田中,克己",
   title	 = "SIGMOD' 89国際会議報告",
   year 	 = "1989",
   institution	 = "筑波大学電子・情報工学系, 神戸大学工学部",
   number	 = "97(1989-DBS-074)",
   month	 = "nov"
}