| 1994 | ||
|---|---|---|
| j1 | Frits L. Engel, Peter Goossens, Reinder Haakma: Improved efficiency through I- and E-feedback: a trackball with contextual force feedback. Int. J. Hum.-Comput. Stud. 41(6): 949-974 (1994) | |
| 1 | Frits L. Engel | |
| 2 | Reinder Haakma |
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