Koedinger, K. R., E. Brunskill, R. S. Baker, E. A. McLaughlin, and J. Stamper. “New Potentials for Data-Driven Intelligent Tutoring System Development and Optimization”. AI Magazine, Vol. 34, no. 3, Sept. 2013, pp. 27-41, doi:10.1609/aimag.v34i3.2484.