Perceptualizing a "Haptic Edge" with Varying Stiffness Based on Force Constancy. - Jaeyoung Cheon; Seungmoon Choi (ICAT, 2006)

Requirements, Implementation and Applications of Hand-held Virtual Reality. - Jane Hwang; Jaehoon Jung; Sunghoon Yim; Jaeyoung Cheon; Sungkil Lee 002; Seungmoon Choi; Gerard Jounghyun Kim (Int. J. Virtual Real., 2006)

Haptizing a Surface Height Change with Varying Stiffness Based on Force Constancy: Effect of Surface Normal Render. - Jaeyoung Cheon; Seungmoon Choi (WHC, 2007)

Haptizing Surface Topography with Varying Stiffness Based on Force Constancy: Extended Algorithm. - Jaeyoung Cheon; Inwook Hwang; Gabjong Han; Seungmoon Choi (HAPTICS, 2008)