@article{1183514377,
author = {Ramaswami, V.},
title = {On the number of positive integers less than $x$ and free of prime divisors greater than $x^c$},
journal = {Bull. Amer. Math. Soc.},
volume = {55},
number = {12},
year = {1949},
pages = { 1122-1127},
language = {en},
url = {http://dml.mathdoc.fr/item/1183514377}
}
Ramaswami, V. On the number of positive integers less than $x$ and free of prime divisors greater than $x^c$. Bull. Amer. Math. Soc., Tome 55 (1949) no. 12, pp. 1122-1127. http://gdmltest.u-ga.fr/item/1183514377/