Y. Xu, J. Ford, E. Becker, and F. Makedon. Tools and Applications with Artificial Intelligence, volume 166 of Studies in Computational Intelligence, Springer, (2009)
R. Mullins, C. Weiss, B. Fegley, and B. Ford. HCI (28), volume 850 of Communications in Computer and Information Science, page 263-267. Springer, (2018)