Culik, Karel; Kari, Jarkko (1997), "On aperiodic sets of Wang tiles", Foundations of Computer Science: Potential — Theory — Cognition, Lecture Notes in Computer Science, vol. 1337, Springer, pp. 153–162, doi:10.1007/BFb0052084.
Kari, Jarkko (2007), "The tiling problem revisited", Proceedings of the 5th International Conference on Machines, Computations, and Universality (MCU 2007), Lecture Notes in Computer Science, vol. 4664, Springer, pp. 72–79, doi:10.1007/978-3-540-74593-8_6.
Kari, J.; Papasoglu, P. (1999), "Deterministic aperiodic tile sets", Geometric and Functional Analysis, 9 (2): 353–369, doi:10.1007/s000390050090, MR1692474.