Markus Holzer en Oliver Ruepp. The Troubles of Interior Design–A Complexity Analysis of the Game Heyawake. Proceedings of the 4th International Conference on Fun with Algorithms, 2007. (pdf). Gearchiveerd op 13 februari 2023.
Markus Holzer en Oliver Ruepp. The Troubles of Interior Design–A Complexity Analysis of the Game Heyawake. Proceedings of the 4th International Conference on Fun with Algorithms, 2007. (pdf). Gearchiveerd op 13 februari 2023.