@techreport{oai:ir.soken.ac.jp:00002748,
 author = {ハシズメ, アヤコ and 橋爪 , 絢子 and HASHIZUME, Ayako},
 issue = {1},
 month = {Jul},
 title = {Use of Cell Phone by Senior Users Compared to Young Users},
 year = {2009}
}