An Evaluation Framework for the Design Concepts of Tangible Interface on New Collaborative Work Support System. - Youngbo Suh; Cheol Lee; Joobong Song; Minjoo Jung; Myung Hwan Yun (HCI (2), 2007)

A User-Centered Approach for Ubiquitous Service Evaluation: An Evaluation Metrics Focused on Human-System Interaction Capability. - Joo Hwan Lee; Joobong Song; Hyungsup Kim; Junyoung Choi; Myung Hwan Yun (APCHI, 2008)

The Development of Human-System Interactivity Metrics for Ubiquitous Service Applying User-Centered Design Methodology. - Joobong Song; Keun Ryang Park; Sanghyun Kwon; Jihwan Lee; Myung Hwan Yun; Joo Hwan Lee (SERVICES I, 2009)