1. (2) M.YAMADA, T.FUKUDA: Subjective Evaluation of the Television Image Using Sight-Line Displacements, NHK Technical Report, 2, pp. 36-60(1988)
2. (3) ed.: T.OHYAMA, S.IMAI & WAKE, Handbook of Sense & Perception Psychology; New Edition, Seishin shobou, P. 4, Tokyo, 1994
3. Visual Perception of Horizon for a Good Lookout at Sea
4. A Lookout of the Ship's Operator from the Standpoint of Sight-line Displacement