To find research articles use databases. You can search a database by key words, by author, by journal name and other ways depending on where you are starting and what you need to find.
In the center column are some of the CORE databases in disciplines that cover Peace Studies journals and topics:
There are many other databases that might be of use depending on the focus of your topic. If you are looking at gender issues, legal aspects, or psychological issues, for instance, you may want to look at databases that cover those topics in depth. All of these categories have their own specialized, core databases. To get to these other databases, go to the MU Libraries home page, click on the gold tab, Databases, and then Databases by Subject. You will see that there are lots of other possibilities such as Women's & Gender Studies, Psychology, Health & Medicine and Government & Law.