Van Houtte, N. A. J., and C. M. Oman, "Hybrid computer display techniques involving a PDP-8", DECUS Spring Symposium, New York, NY, Digital Equipment Corporation, pp. 165-167, 1970.

Young, L. R., C. M. Oman, R. M. Vircks, N. A. J. Van Houtte, and G. G. Kemp, "Three display techniques at the Man-Vehicle Lab", 5th Annual Conference on Manual Control, vol. NASA SP-215, Cambridge, MA, NASA, pp. 271-284, 1969.