@techreport{weko_30978_1,
   author	 = "酒井,公治",
   title	 = "格文法を用いたLogoの拡張",
   year 	 = "1989",
   institution	 = "慶応義塾大学理工学研究科",
   number	 = "48(1989-PRO-051)",
   month	 = "jun"
}