@techreport{weko_33782_1,
   author	 = "腰塚,武志",
   title	 = "所要時間や所要エネルギーを最小にする道路密度",
   year 	 = "1995",
   institution	 = "筑波大学社会工学系",
   number	 = "44(1995-MPS-001)",
   month	 = "may"
}