The Wayback Machine - https://web.archive.org/web/20201029072543/https://www.researchgate.net/profile/Sunghye_Cho2/publication/319291457_Development_of_Pitch_Contrast_and_Seoul_Korean_Intonation_Copyright/links/5d51c9b292851cd046b6c422/Development-of-Pitch-Contrast-and-Seoul-Korean-Intonation-Copyright.pdf