%0 Book Section %B Invariance and variability in speech processes %D 1986 %T Phonological evidence for top-down processing in speech perception %A Ohala, John J. %E Perkell, J. S. %E Klatt, D. H. %B Invariance and variability in speech processes %I Erlbaum %C Hillsdale %P 386–401 %G eng