OJS Citation Style Language Plugin (Vancouver and Turabian)

Hello PKP community

We realized that Citation Style Language Plugin for OJS do not format the citation with DOI but with URL in the styles Vancouver and Turabian.

We are wondering if for the next release of OJS you could include this little change. What we expect is that if an article has a DOI display it, if not display the URL. Is it possible? The issue happens only with these two styles, because others (i.e. APA and Chicago) works fine.