@InCollection{Danielak:2020,
author
=
"W.Danielak",
title
=
"Values obtained from customer relationship management",
pages
=
"9--17",
year
=
"2020",
booktitle
=
"Innovation and entrepreneurship. Theory and Practice ISBN: 9783832550431",
editor
=
"eds. M. Lis, M. Szyszka",
publisher
=
"Logos Verlag",
address
=
"Berlin",
}