@techreport{weko_53368_1,
   author	 = "Held,Andreas and 阿部,圭一 and ",
   title	 = "近似的な凸性",
   year 	 = "1992",
   institution	 = "静岡大学大学院電子科学研究科, 静岡大学工学部情報知識工学科",
   number	 = "90(1992-CVIM-080)",
   month	 = "nov"
}