7Dienes Z, Perner J. A Theory of Implicit and Explic It Knowledge. Behavioural and Brain Sciences, 1999, 22(5):735-808
8Osgood C E, Suci C J, Tannenbaum P H. The Measurement of Meaning. Urbana: University of Illinois Press, 1957
9Maurer C, Overbeke C J, Smets G. The Semantics of Street Furniture. In: Susann Vihma ed. Object and Images-Studies in Design and Advertising. Helsinki: University of Industrial Arts Helsinki, 1992:86-93
10Espe H. Symbolic Qualities of Watches. In: Susann Vihma ed. Object and Images-Studies in Design and Advertising. Helsinki: University of Industrial Arts Helsinki,1992: 124-131
