References

• 1990The Iowa Articulation Norms Project and its Nebraska Replication599 cited
• 1972When are Speech Sounds Learned?402 cited
• 1968A DIALECT STUDY OF AMERICAN R’S BY X-RAY MOTION PICTURE400 cited
• 1985Phonetic Inventories, 15–24 Months341 cited
• 1993Phonologic Error Distributions in the Iowa-Nebraska Articulation Norms Project270 cited
• 1997Toward articulatory-acoustic models for liquid approximants based on MRI and EPG data. Part I. The laterals267 cited
• 1995Children learn separate aspects of speech production at different rates: Evidence from spectral moments173 cited
• 1999Articulatory tradeoffs reduce acoustic variability during American English /r/ production159 cited
• 2000Acoustic modeling of American English /r/144 cited
• 1998Differences among speakers in lingual articulation for American English /ɹ/139 cited
• 1975Acoustic characteristics of English /w,r,l/ spoken correctly by young children and adults107 cited
• 1987Acquisition of Spanish Consonants in Children Aged 3–5 Years, 7 Months104 cited
• 1997Toward articulatory-acoustic models for liquid approximants based on MRI and EPG data. Part II. The rhotics99 cited
• 1981The identification of /r/ and /l/ in natural and synthesized speech89 cited

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