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2. APEX: an experiment in the automated creation of pictorial explanations;Feiner;IEEE CG & A,1985
3. Computer Graphics: Principles and Practice;Foley,1990
4. Controlling dynamic simulation with kinematic constraints, behaviour functions and inverse dynamics;Isaacs;Computer Graphics,1987
5. Rapid controlled movement through a virtual 3D space;Mackinlay;Computer Graphics,1990