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Remarkable...It will surely remain the unique reference in this area for many years to come. Roger Penrose , Nature ...an outstanding achievement in mathematical education. Bulletin of The London Mathematical Society I am enormously impressed...Will be the definitive reference on tiling theory for many decades. Not only does the book bring together older results that have not been brought together before, but it contains a wealth of new material...I know of no comparable book. Martin Gardner
Golomb et al. (Fri,) studied this question.