@article{1183526102,
author = {Landau, H. J.},
title = {A sparse regular sequence of exponentials closed on large sets},
journal = {Bull. Amer. Math. Soc.},
volume = {70},
number = {6},
year = {1964},
pages = { 566-569},
language = {en},
url = {http://dml.mathdoc.fr/item/1183526102}
}
Landau, H. J. A sparse regular sequence of exponentials closed on large sets. Bull. Amer. Math. Soc., Tome 70 (1964) no. 6, pp. 566-569. http://gdmltest.u-ga.fr/item/1183526102/