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@article{SEMR_2005_2_a1, author = {A. \`E. Frid}, title = {A~lower bound for the arithmetical complexity of {Sturmian} words}, journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a}, pages = {14--22}, publisher = {mathdoc}, volume = {2}, year = {2005}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/SEMR_2005_2_a1/} }
A. È. Frid. A~lower bound for the arithmetical complexity of Sturmian words. Sibirskie èlektronnye matematičeskie izvestiâ, Tome 2 (2005), pp. 14-22. http://geodesic.mathdoc.fr/item/SEMR_2005_2_a1/