1. Keston , R. Doxtader , D. Massa , R. J. Visual experiments related to night carrier landing . LFE Electronics Technical Report 63-4, Boston, Mass 1963
2. Johnson , W. Lt. Col. Personal communication. U. S. Army Transportation Research Command, Ft. Eustis, Va
3. A design philosophy for man-machine control systems;Birmingham;Proc. IRE,1954
4. The display and use of navigational intelligence;Majendie;J. Inst. Navigation,1958