Jansson, G., Petrie, H., Colwell, C., Kornbrot, D., Fänger, J., König, H., … Furner, S. (1999). Haptic Virtual Environments for Blind People: Exploratory Experiments with Two Devices. International Journal of Virtual Reality, 4(1), 8–17. https://doi.org/10.20870/IJVR.1999.4.1.2663