@techreport{oai:ir.soken.ac.jp:00002781,
 author = {ハシズメ, アヤコ and クロス, マサアキ and ヤマナカ, トシマサ and 橋爪, 絢子 and 黒須, 正明 and 山中 , 敏正 and HASHIZUME, Ayako and KUROSU, Masaaki and YAMANAKA , Toshimasa},
 issue = {2},
 month = {Mar},
 title = {Regional Difference in the Use of Cell Phone and Other Communication Media among Senior Users（HCI International 2009）},
 year = {2010}
}