%0 Journal Article %A Aleksandar Ivić %T On some estimates involving the number of prime divisors of an integer %J Acta Arithmetica %D 1987 %P 21-33 %V 49 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-49-1-21-33/ %R 10.4064/aa-49-1-21-33 %G en %F 10_4064_aa_49_1_21_33