A Perceptual Study of Haptic Rendering of Surface Topography when Both Surface Height and Stiffness Vary. - Laron Walker; Hong Z. Tan (HAPTICS, 2004)

A Haptic Interface for Human-in-the-Loop Manipulation at the Nanoscale. - Hong Z. Tan; Laron Walker; Ron Reifenberger; Sorubh Mahadoo; George Chiu 001; Arvind Raman; Aron T. Helser; Pablo Colilla (WHC, 2005)

Force constancy and its effect on haptic perception of virtual surfaces. - Seungmoon Choi; Laron Walker; Hong Z. Tan; Scott Crittenden; Ron Reifenberger (ACM Trans. Appl. Percept., 2005)