TY - CHAP T1 - Towards a model for the development of speech perception T2 - Invariance and variability in speech processes Y1 - 1986 A1 - Jusczyk, Peter ED - Perkell, J. ED - Klatt, D. H. JF - Invariance and variability in speech processes PB - Erlbaum CY - Hillsdale, {N.J.} ER -