@Lyte Research papers on Player Behavior & Justice in online video games

Ever since Riot and the PB&J team hosted discussions on the Tribunal and their experiments to make League a less toxic place, I've been interested in doing research similar to what the PB&J team is doing. Could someone recommend some research papers describing the recent work done involving mitigating toxicity in online games? As I come closer to completing my Master's degree, I'm considering pursuing a doctorate in that field, but would like to read up on the current state of the field before I make any hasty decisions.

Thanks!