@article{1255986268, author = {Matheron, Etienne}, title = {The descriptive complexity of Helson sets}, journal = {Illinois J. Math.}, volume = {39}, number = {4}, year = {1995}, pages = { 608-626}, language = {en}, url = {http://dml.mathdoc.fr/item/1255986268} }
Matheron, Etienne. The descriptive complexity of Helson sets. Illinois J. Math., Tome 39 (1995) no. 4, pp. 608-626. http://gdmltest.u-ga.fr/item/1255986268/