1. Checker boards and polyominoes;Golomb;American Mathematical Monthly,1954
2. On translating one polyomino to tile the plane;Beauquier;Discrete & Computational Geometry,1991
3. Polyominoes: Puzzles, Patterns, Problems, and Packings;Golomb,1996
4. Mathematical games;Gardner;Scientific American,1958
5. Enumerations of lattice animals and trees;Jensen;Journal of Statistical Mechanics,2001