H. Zhang, A. Santos, and J. Freire. Proceedings of the 30th ACM International Conference on Information &$\mathsemicolon$ Knowledge Management, ACM, (October 2021)
A. Sinha, Z. Shen, Y. Song, H. Ma, D. Eide, B. Hsu, and K. Wang. Proceedings of the 24th International Conference on World Wide Web, page 243--246. Republic and Canton of Geneva, Switzerland, International World Wide Web Conferences Steering Committee, (2015)