Phonological systems in bilinguals: age of learning effects on the stop consonant systems of Korean-English bilinguals.
The Critical Period for Language Acquisition : Evidence from Second Language Learning
The first years in an L 2-speaking environment : A comparison of Japanese children and adults learning American English
Cross-language identification of consonants. Part 1. Korean perception of English.
Rapid and multifaceted effects of second-language learning on first-language speech production
Acoustic evidence for the emergence of tonal contrast in contemporary Korean