For research students, I have seen that Zotero database can be integrated in Notion. However, some students use Mendeley as the Reference Management Tool. So, like Zotero, can Mendeley be integrated in Notion?
You will be limited to third party solutions or to create a custom one.
Automation tools like Zapier and Make does not support Mendeley, so you will need something like Tray to see if it suit your needs, otherwise you will have to create a custom Mendeley integration using the Notion API.