@techreport{oai:tsukuba.repo.nii.ac.jp:00022688,
 author = {原田, 信行 and HARADA, Nobuyuki},
 month = {},
 note = {Includes bibliographical references},
 title = {Video game demand in Japan : a household data analysis},
 year = {2004},
 yomi = {ハラダ, ノブユキ}
}