S. Doerfel, D. Zoller, P. Singer, T. Niebler, A. Hotho, and M. Strohmaier. 23rd International World Wide Web Conference, WWW '14, Seoul, Republic of Korea, April 7-11, 2014, Companion Volume, page 251--252. New York, NY, USA, ACM, (2014)
M. Valenzuela, V. Ha, and O. Etzioni. Scholarly Big Data: AI Perspectives, Challenges, and Ideas, Papers from the 2015 AAAI Workshop, WS-15-13, page 21--26. Menlo Park, CA, AAAI Press, (2015)