ACM - affordances
Peter P. Tanner
Stephen A. MacKay
Darlene A. Stewart
Marceli Wein
Proceedings of the 13th annual conference on Computer graphics and interactive techniques - SIGGRAPH ’86
The detailed semantics of graphics input devices
Springer-Verlag, Berlin (1985)
Vancouver, British Columbia, Canada
revised May 1985)
the reply primitive and the administrator concept
Tablet-based valuators that provide one, two, or three degrees of freedom