@article{oai:ipsj.ixsq.nii.ac.jp:00003463, author = {森下, 哲次 and Morishita, Tetsuji}, issue = {4}, journal = {情報処理}, month = {Apr}, title = {仮想環境社会の展望 :2. 仮想環境サービスの展望}, volume = {38}, year = {1997} }