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\newblock {\em ACM Transactions on Asian Language Information Processing
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\newblock {\em Ethnologue: Languages of the World}.
\newblock SIL International, Dallas, Texas, 15 edition, 2005.

\bibitem{sgcpaper}
D.J.M. Weenink, G.~Chen, Z.~Chen, S.~de~Konink, D.~Vierkant, E.~Hagen, and
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\bibitem{zheng2007}
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\newblock Categorical perception of cantonese tones in context: a
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\newblock In {\em Interspeech 2007}, pages 2745--2748, Antwerp, Belgium, August
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