Many online journals and databases require subscriptions (which NYU Libraries pays for) to get access.
If you are on campus, access can be relatively seamless since authentication is usually established by IP address.
If you are off campus, then you need to be routed through the Libraries' proxy server, so that you can be authenticated after providing your NYU NetID and password.
Looking for something specific? Use the search by citation tool
When using article databases, remember there are always three stages in your workflow: