The Danish long vowels. Frøkjær-Jensen, B. Annual Reports of the Institute of Phonetics, University of Copenhagen, 1:34–46, 1967.
bibtex   
@article{frokjaer-jensen_danish_1967,
	title = {The {Danish} long vowels},
	volume = {1},
	issn = {0589-6681},
	journal = {Annual Reports of the Institute of Phonetics, University of Copenhagen},
	author = {Frøkjær-Jensen, Børge},
	year = {1967},
	pages = {34--46},
}

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