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Persson (2024), p. 604. Persson, Anna (2024). "The acoustic characteristics of Swedish vowels". Phonetica. 81 (6): 599–643. doi:10.1515/phon-2024-0011. PMID 39443329.
Persson (2024), §3.2.1, §4. Persson, Anna (2024). "The acoustic characteristics of Swedish vowels". Phonetica. 81 (6): 599–643. doi:10.1515/phon-2024-0011. PMID 39443329.

pure.fo (Global: low place; English: low place)

Peterson (2000), cited in Árnason (2011:76) Peterson, Hjalmar P. (2000), "Mátingar af sjálvljóðum í føruyskum" (PDF), Málting (in Faroese), 10 (1): 37–43, archived (PDF) from the original on 2023-12-30 Árnason, Kristján (2011), The Phonology of Icelandic and Faroese, Oxford University Press, ISBN 978-0199229314

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Fougeron & Smith (1993), p. 73. Fougeron, Cecile; Smith, Caroline L. (1993), "French", Journal of the International Phonetic Association, 23 (2): 73–76, doi:10.1017/S0025100300004874, S2CID 249404451
Szende (1994), p. 92. Szende, Tamás (1994), "Hungarian", Journal of the International Phonetic Association, 24 (2): 91–94, doi:10.1017/S0025100300005090, S2CID 242632087
Gussenhoven & Aarts (1999), p. 159. Gussenhoven, Carlos; Aarts, Flor (1999), "The dialect of Maastricht" (PDF), Journal of the International Phonetic Association, 29 (2), University of Nijmegen, Centre for Language Studies: 155–166, doi:10.1017/S0025100300006526, S2CID 145782045
Peters (2017), p. ?. ——— (2017), "Saterland Frisian", Journal of the International Phonetic Association, 49 (2): 223–230, doi:10.1017/S0025100317000226, S2CID 232348873

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Peterson (2000), cited in Árnason (2011:76) Peterson, Hjalmar P. (2000), "Mátingar af sjálvljóðum í føruyskum" (PDF), Málting (in Faroese), 10 (1): 37–43, archived (PDF) from the original on 2023-12-30 Árnason, Kristján (2011), The Phonology of Icelandic and Faroese, Oxford University Press, ISBN 978-0199229314

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García, Fernando Álvarez-Balbuena (2015-09-01). "Na frontera del asturllionés y el gallegoportugués: descripción y exame horiométricu de la fala de Fernidiellu (Forniella, Llión). Parte primera: fonética". Revista de Filoloxía Asturiana. 14 (14). ISSN 2341-1147.

Close-mid front rounded vowel (English Wikipedia)

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cl.up.pt

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researchgate.net (Global: 120^th place; English: 125^th place)

semanticscholar.org (Global: 11^th place; English: 8^th place)

up.pt (Global: 6,800^th place; English: 9,579^th place)

uva.nl (Global: 3,518^th place; English: 2,652^nd place)

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