Robinson, Raphael M.. "Undecidability and Nonperiodicity for Tilings of the Plane.." Inventiones mathematicae 12 (1971): 177-209. <http://eudml.org/doc/142073>.
@article{Robinson1971, author = {Robinson, Raphael M.}, journal = {Inventiones mathematicae}, keywords = {elementary geometry}, pages = {177-209}, title = {Undecidability and Nonperiodicity for Tilings of the Plane.}, url = {http://eudml.org/doc/142073}, volume = {12}, year = {1971}, }
TY - JOUR AU - Robinson, Raphael M. TI - Undecidability and Nonperiodicity for Tilings of the Plane. JO - Inventiones mathematicae PY - 1971 VL - 12 SP - 177 EP - 209 KW - elementary geometry UR - http://eudml.org/doc/142073 ER -