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J. Wu, K. Williams, H. Chen, M. Khabsa, C. Caragea, A. Ororbia, D. Jordan, and C. Giles. Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence and the Twenty-Sixth Innovative Applications of Artificial Intelligence Conference, Québec, Canada, page 2930--2937. Association for the Advancement of Artificial Intelligence, (July 2014)
M. Thein, and M. Thwin. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), volume 2 of IFIP Advances in Information and Communication Technology, page 13-32. Springer, (December 2012)
D. Sonntag, and H. Profitlich. 30th IEEE International Symposium on Computer-Based Medical Systems, CBMS 2017, Thessaloniki, Greece, June 22--24, 2017, page 95--100. Los Alamitos, CA, IEEE Computer Society, (2017)