Routledge has put together a list of 34 studies on social media in journalism, open access until end of March. On this list you will find some of the most important international research from some of the best scholars in the field.
One of the articles is The social journalist: Embracing the social media life or creating a new digital divide, by Monika Djerf-Pierre and myself. So, if you are interested in my academic work take the opportunity to read it ;)
Routledge's list of articles