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Catherwood, Dianne F and Crassini, Boris and Freiberg, Kate (1990) The Relative Encoding of Colour and Shape by 5-Month-Old Infants. Australian Educational and Developmental Psychologist, 7 (2). pp. 1-3. ISSN 0816-5122
Smith, AT and Edgar, Graham K (1990) The separability of temporal frequency and velocity. Vision Research, 31 (2). pp. 321-326.