@article{05015704, title = {Mean value of Piltz' function over integers free of large prime factors.}, journal = {Publications de l'Institut Math\'ematique. Nouvelle S\'erie}, volume = {73(87)}, year = {2003}, pages = {37-56}, doi = {10.2298/PIM0374037N}, zbl = {1085.11045}, language = {en}, url = {http://dml.mathdoc.fr/item/05015704} }
Nyandwi, Servat. Mean value of Piltz' function over integers free of large prime factors.. Publications de l'Institut Mathématique. Nouvelle Série, Tome 73(87) (2003) pp. 37-56. doi : 10.2298/PIM0374037N. http://gdmltest.u-ga.fr/item/05015704/