Whether and How Mandarin Sandhied Tone 3 and Underlying Tone 2 differ in Terms of Vowel Quality?

Yu-Jung Lin Yu-Yin Hsu Whether and How Mandarin Sandhied Tone 3 and Underlying Tone 2 differ in Terms of Vowel Quality? 2018 PACLIC https://aclanthology.org/Y18-1044/ conf/paclic/2018 db/conf/paclic/paclic2018.html#LinH18