You should be able to log into your University's library website and access a database of scholarly journals there. My universities had that capability. If not, call your University library up and talk to them about it, at the very least they should be able to point you in the right direction.
And Mk-84. He's talking about papers written by professors and scholars and published in Scholarly Journals, which are not cheap, and cannot be found with a simple google search for free. Most High Schools and Universities have access to them for their students via their libraries.
I have always hated the damned things.
These are usually professional papers done about specific research and contain a significant number of primary and secondary sources and usually read worse than an Encyclopedia. But that's what I get for being a History Major. Thank God I only had to use them as a source once, and was able to get away with actual books for the rest of my stuff.