Functional phonology : formalizing the interactions between articulatory and perceptual drives / Paulus Petrus Gerardus BoersmaFunctional phonology : formalizing the interactions between articulatory and perceptual drives / Paulus Petrus Gerardus BoersmaBuigzame geluiden / Paul BoersmaPraat: doing phonetics by computer / authors: Paul Boersma and David WeeninkPraat: doing phonetics by computer : version 3.4 / Paul Boersma and David WeeninkBuigzame geluiden / Paul BoersmaBuigzame geluiden / Paul Boersma