“…For instance, Caramazza, Yeni-Komshian, Zurif, and Carbone (1973), Flege and Eefting (1987), Port and Mitleb (1983) among others found voicing contrasts and VOT to be different in L1 and L2 speech. Flege, Schirru, and MacKay (2003), Kehoe (2002), Flege, Bohn, and Jang (1997) investigated the differences between L1 and L2 vowel production. Flege, Takagi and Mann (1995) investigated the differences in production and perception of liquid sounds in L1 and L2 speech.…”