Moree, Pieter Max Planck Institute for Mathematics, Max Planck Society;
http://math.colgate.edu/~integers/vol14a.html (Publisher version)
Moree_Integers without large prime factors_oa_2014.pdf (Any fulltext), 220KB
Moree, P. (2014). Integers without large prime factors: from Ramanujan to de Bruijn. Integers, 14A: A5, 13 pp..