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"Two-Dimensional Parson's Puzzles: The Concept, Tools, and First Observations."
Petri Ihantola, Ville Karavirta (2011)
- Petri Ihantola, Ville Karavirta:
Two-Dimensional Parson's Puzzles: The Concept, Tools, and First Observations. J. Inf. Technol. Educ. Innov. Pract. 10: 119-132 (2011)
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