A new input device putting together merits of shortcut key and toolbar: fast keypad system. - Sungwook Baek; Soohyun Jo; Haekwang Lee; Soryoung Kim; Jangseok Kim (UbiComp, 2011)

Ambient surface: enhancing interface capabilities of mobile objects aided by ambient environment. - Taik Heon Rhee; Minkyu Jung; Sungwook Baek; Hyun-Jin Kim; Sungbin Kuk; Seonghoon Kang; Hark-Joon Kim (UIST (Adjunct Volume), 2013)