@article{Schiller_2019,
title={Inside the Group: Investigating Social Structures in Player Groups and Their Influence on Activity},
volume={11},
ISSN={2475-1510},
url={http://dx.doi.org/10.1109/tg.2018.2858024},
DOI={10.1109/tg.2018.2858024},
number={4},
journal={IEEE Transactions on Games},
publisher={Institute of Electrical and Electronics Engineers (IEEE)},
author={Schiller,
Michael H. and Wallner,
Gunter and Schinnerl,
Christopher and Calvo,
Alexander Monte and Pirker,
Johanna and Sifa,
Rafet and Drachen,
Anders},
year={2019},
month=dec,
pages={416–425} }