Beyond the individual: Understanding social structures of an online player matchmaking website. - Günter Wallner; Christopher Schinnerl; Michael Helfried Schiller; Alexander Monte Calvo; Johanna Pirker; Rafet Sifa; Anders Drachen (Entertain. Comput., 2019)

Inside the Group: Investigating Social Structures in Player Groups and Their Influence on Activity. - Michael Helfried Schiller; Günter Wallner; Christopher Schinnerl; Alexander Monte Calvo; Johanna Pirker; Rafet Sifa; Anders Drachen (IEEE Trans. Games, 2019)