Jacques Koreman, 
   William J. Barry and 
   Marte Kristine Lindseth. Preaspiration and perceived vowel duration in Norwegian.  In Proceedings Fonetik 2008 : the XXIst Swedish Phonetics Conference ; June 11–13, 2008, Department of Linguistics, University of Gothenburg. - Gothenburg : Dep. of Linguistics, 2008, S. 25-28,   0.      google Note: WB.
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