1. Tiling the plane with one tile;Beauquier,1991
2. Tiling figures of the plane with two bars, a horizontal and a vertical one;Beauquier,1992
3. The undecidability of the domino problem;Berger;Mem. Amer. Math. Soc.,1966
4. Polyominoes and animals: some recent results;Delest;J. Comput. Chem.,1991
5. Tilings and Patterns;Grünbaum,1986