@article{Grytczuk:2009,
author
=
"A.Grytczuk",
title
=
"The Halberstam-Richert type theorems for submultiplicative functions on arithmetical semigroups",
journal
=
"Demonstratio Mathematica",
volume
=
"Vol. 19",
number
=
"no 3",
pages
=
"629--636",
year
=
"1986",
}