Hammond, T., Logsdon, D., Paulson, B., Johnston, J., Peschel, J., Wolin, A. and Taele, P. (2010) “A Sketch Recognition System for Recognizing Free-Hand Course of Action Diagrams”, Proceedings of the AAAI Conference on Artificial Intelligence, 24(2), pp. 1781-1786. doi: 10.1609/aaai.v24i2.18812.