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"Kirchhoff's Pen: A Pen-based Circuit Analysis Tutor."
Ruwanee de Silva et al. (2007)
- Ruwanee de Silva, David Tyler Bischel, WeeSan Lee, Eric Jeffrey Peterson, Robert C. Calfee, Thomas F. Stahovich:
Kirchhoff's Pen: A Pen-based Circuit Analysis Tutor. SBIM 2007: 75-82
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