Body-Based Interfaces. - Changseok Cho; Huichul Yang; Gerard Jounghyun Kim; Sung Ho Han (ICMI, 2002)

A Framework for Evaluating the Usability of Spoken Language Dialog Systems (SLDSs). - Wonkyu Park; Sung Ho Han; Yong S. Park; Jungchul Park; Huichul Yang (HCI (10), 2007)