Barbieri, L., Bruno, F., Cosco, F., Muzzupappa, M. (December 2014). "Effects of device obtrusion and tool-hand misalignment on user performance and stiffness perception in visuo-haptic mixed reality". International Journal of Human-Computer Studies. 72 (12): 846–859. doi:10.1016/j.ijhcs.2014.07.006.Pemeliharaan CS1: Banyak nama: authors list (link)