@techreport{weko_147179_1,
   author	 = "Xingji,Zeng and Yasuhiro,Mukaigawa and Naoki,Chiba",
   title	 = "Shadow Elimination for Constructing Virtual Environments",
   year 	 = "2016",
   institution	 = "Graduate School of Information Science, Nara Institute of Science and Technology／Rakutenb Institue of Technology, Graduate School of Information Science, Nara Institute of Science and Technology, Rakutenb Institue of Technology",
   number	 = "39",
   month	 = "jan"
}