\bib{1949/ramaswami}
\yr 1949
\mr 10,597b
\by V. Ramaswami
\paper The number of positive integers $\le x$ and free of prime divisors $>x^c$, and a problem of S. S. Pillai
\jour Duke Mathematical Journal
\issn 0012--7094
\vol 16
\pages 99--109
\endref