Geometriae Dedicata · 1999 · 19 citations · 10 references
Natural SciencesMathematicsGeometryTopologyMetric GeometryMetric SpacesTiling PatternsTiling ProblemsTiling Theory
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The undecidability of the domino problem
Robert E. Berger · Memoirs of the American Mathematical Society · 1966 · 974 citations
Addition theorems for sets of integers
Calvin T. Long · Pacific Journal of Mathematics · 1967 · 66 citations · Full text
Nonexistence theorems on perfect Lee codes over large alphabets
K.A. Post · Information and Control · 1975 · 55 citations · Full text