Training Japanese listeners to identify English /r/and /l/: Long-term retention of learning in perception and production 論文 Ann R. Bradlow・Reiko Akahane-Yamada・David B. Pisoni・Yoh’ichi Tohkura ·1999-01-01 ·『Perception & Psychophysics』 61(5) pp. 977-985 doi:10.3758/bf03206911