The acquisition of the voicing contrast in Spanish: a phonetic and phonological study of word-initial stop consonants.
D002663:Child Language; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007223:Infant; D007804:Language Development; D008137:Longitudinal Studies; D008297:Male; D010700:Phonetics; D014831:Voice