B. Hansen, L. Loland, M. Goodwin, and O. Granmo. SAIS, volume 129 of Linköping Electronic Conference Proceedings, page 129:003. Linköping University Electronic Press, (2016)
S. Koenig, R. Goodwin, and R. Simmons. Reasoning with Uncertainty in Robotics, volume 1093 of Lecture Notes in Computer Science, page 322-337. Springer, (1995)