@article{oai:ipsj.ixsq.nii.ac.jp:00090041,
 author = {円城, 塔 and ENJOE, Toh},
 issue = {3},
 journal = {情報処理},
 month = {Feb},
 title = {世界創作の技法},
 volume = {54},
 year = {2013}
}