https://linguistics.osu.edu/about-us/osu-dissertations-linguistics (Any fulltext)
https://linguistics.osu.edu/sites/linguistics.osu.edu/files/Lee_dissertation_1993.pdf (Publisher version)
Lee, G. M. (1993). Comparative, diachronic and experimental perspectives on the interaction between tone and vowel in standard Cantonese. PhD Thesis, Ohio State Univ., Columbus.