Hyesun Cho Edward Flemming The Phonetic Specification of Contour Tones: The Rising Tone in Mandarin. 112-115 2011 ICPhS https://www.internationalphoneticassociation.org/icphs-proceedings/ICPhS2011/OnlineProceedings/SpecialSession/Session4/Cho/Cho.pdf conf/icphs/2011 db/conf/icphs/icphs2011.html#ChoF11