Riot Games/LoL, scientific psychology articles?

Sorry if this has been answered elsewhere (in which case - I love hyperlinks!) but is there somewhere I can find a list of the published, peer-reviewed articles regarding Riot/LoL that I've been reading about? It(/we) look(s) like an interesting cohort. I'm especially interested in anything regarding behavioral aspects and psychological mechanisms in such a vast, anonymous and competitive community.

I have found a few. Are there any others?

Kwak et al. : Exploring Cyberbullying and Other Toxic Behavior in Team Competition Online Games http://arxiv.org/abs/1504.02305

Johansson et al. : I Am Being Watched By The Tribunal - Trust and Control in Multiplayer Online Battle Arena Games http://www.sirg.se/wp-content/uploads/2013/12/Johansson_etal_tribunal.pdf

Kou & Gui : Playing with strangers: understanding temporary teams in league of legends http://dl.acm.org/citation.cfm?id=2658538

Related but not right on the money:

https://www.ideals.illinois.edu/handle/2142/39981 http://www.ics.uci.edu/~yubok/Kou_FDG2014_cameraready.pdf http://www.digra.org/wp-content/uploads/digital-library/paper_230_formattingfixed.pdf http://www.sersc.org/journals/IJMUE/vol9_no8_2014/2.pdf

Also - feel free to let me know of studies conducted on comparable communities. Dota, WoW etc. comes to mind.