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"Newton's Pen: A pen-based tutoring system for statics."
WeeSan Lee et al. (2008)
- WeeSan Lee, Ruwanee de Silva, Eric Jeffrey Peterson, Robert C. Calfee, Thomas F. Stahovich:
Newton's Pen: A pen-based tutoring system for statics. Comput. Graph. 32(5): 511-524 (2008)
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