1. Anderson L. M. (1981) Land use designations affect perception of scenic beauty in forest landscape. Forest Science 27(2): 392–400
2. Böcker, M. (1993). A multiple index approach for the evaluation of pictograms. In Proceedings of the 14th international symposium on human factors in telecommunications (pp. 73–85). Heidelberg: R. v. Decker’s Verlag, G. Schenck GmbH.
3. Bullimore M.A., Fulton E.J., Howarth P.A. (1991) Assessment of visual performance. In: Wilson J. R., Corlett E. (eds) Evaluation of human work Chap. 26. Taylor & Francis, London, pp 648–681
4. Chang W. C., Van Y. T. (2003) Researching design trends for the redesign of product form. Design Studies 24: 173–180
5. Chuang M. C., Chang C. C., Hsu S. H. (2001) Perceptual factors underlying user preferences toward product form of mobile phones. International Journal of Industrial Ergonomics 27: 247–258