@article{1077493523,
author = {Salem, R. and Spencer, D. C.},
title = {The influence of gaps on density of integers},
journal = {Duke Math. J.},
volume = {9},
number = {1},
year = {1942},
pages = { 855-872},
language = {en},
url = {http://dml.mathdoc.fr/item/1077493523}
}
Salem, R.; Spencer, D. C. The influence of gaps on density of integers. Duke Math. J., Tome 9 (1942) no. 1, pp. 855-872. http://gdmltest.u-ga.fr/item/1077493523/