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Corrêa, R. da C. 2017. The variable occurrence of flap in syllable onset where a trill is expected in Brazilian Portuguese in the speech community of Antônio Prado-RS. Letrônica. 10, 1 (Dec. 2017), 325–335. DOI:https://doi.org/10.15448/1984-4301.2017.1.25056.