Watanabe, H., Okumura, T. and Wakamiya. E. (2015) Evaluation of Navigation Behavior by Walking Task in the Immersive Type Virtual Environment. The Japanese Journal of Ergonomics, 51, 145-149. (In Japanese)
 Okumura, T., Watanabe, H. and Wakamiya, E. (2014) Relationship between Topographical Orientation and Visual Perception in Young Adults. Proceedings of COVD 44th Annual Meeting, San Diego, 22 October 2014.
 Buckley, M.G. and Smith, A.D. (2013) Evidence for Spatial Navigational Impairments in Hydrocephalus Patients without Spina Bifida. Brain and Cognition, 83, 132-141.
 Iaria, G. and Barton, J.J.S. (2010) Developmental Topographical Disorientation: A Newly Discovered Cognitive Disorder. Experimental Brain Research, 206, 189-196.
 Takeuchi, Y. (1992) Sense of Direction and Its Relationship with Geographical Orientation, Personality Traits and Mental Ability. Japanese Journal of Educational Psychology, 40, 47-53.
 Thorndyke, P.W. and Hayes-Roth, B. (1982) Differences in Spatial Knowledge Acquired from Maps and Navigation. Cognitive Psychology, 13, 407-433.
 Hegatry, M., Richardson, A.E., Montello, D.R., Lovelace, K. and Subbiah, I. (2002) Development of a Self-Report Measure of Environmental Spatial Ability. Intelligence, 30, 425-447.