@article{1183534442, author = {Shapiro, Harold S.}, title = {Functions with a spectral gap}, journal = {Bull. Amer. Math. Soc.}, volume = {79}, number = {5}, year = {1973}, pages = { 355-360}, language = {en}, url = {http://dml.mathdoc.fr/item/1183534442} }
Shapiro, Harold S. Functions with a spectral gap. Bull. Amer. Math. Soc., Tome 79 (1973) no. 5, pp. 355-360. http://gdmltest.u-ga.fr/item/1183534442/