M. Becker, K. Borchert, M. Hirth, H. Mewes, A. Hotho, and P. Tran-Gia. Proceedings of the 15th International Conference on Knowledge Technologies and Data-driven Business, page 10:1--10:8. New York, NY, USA, ACM, (October 2015)
T. Niebler, M. Becker, D. Zoller, S. Doerfel, and A. Hotho. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management, New York, NY, USA, ACM, (2016)
P. Singer, D. Helic, A. Hotho, and M. Strohmaier. Proceedings of the 24th International Conference on World Wide Web, page 1003--1013. New York, NY, USA, ACM, (2015)