Le Gac, David, Hiyon Yoo, and Katarina Bartkova. Pitch level variation in French; categorical or gradient? In Speech Prosody 2012. Shangaï, Chine, 2012.

Le Gac, David, Hiyon Yoo, and Katarina Bartkova. Variations mélodiques : variations continues ou catégorielles ? In Actes de la conférences JEP-TALN 2012., 2012.

Le Gac, David, and Hiyon Yoo. Does activation state affect intonation; left dislocated topics in Modern Greek In Interfaces Discours Prosodie IDP 2011. Salford, Royaume-Uni, 2011.

Yoo, Hiyon, and David Le Gac. Intonation of left dislocated topics in modern greek In INTERSPEECH-2011. Florence, Italie, 2011.

Le Gac, David, and Hiyon Yoo. Les primitives intonatives du français : une proposition In Interfaces Discours Prosodie IDP 2009, Edited by Hiyon Yoo and Élisabeth Delais-Roussarie. Paris, 2010.

Le Gac, David, and Hiyon Yoo. Establishing dependencies within an independent structure of intonation In OCP5., 2008.