@inbook{ GUTIÉRREZ:426-435,
author = { JUNCAL GUTIÉRREZ ARTACHO } ,
title = { Open Source CRM Tools for Small Companies },
booktitle = { Recent Advances in Information Systems and Technologies },
isbn = { 978-3-319-56535-4 },
publisher = { Springer },
pages = { 426 - 435 },
year = { 2017 },
}