@ARTICLE {19033,
author={R. Cardoso and A. Gomes and M. Freire},
doi={10.1109/TCIAIG.2016.2592965},
journal={IEEE Transactions on Computational Intelligence and AI in Games},
title={A User Trust System for Online Games – Part I: An Activity Theory Approach for Trust Representation},
year={2016},
month={July},
volume={99},
number={X},
pages={1-16},
ISSN={1943-068X}
}