1. Art and Visual Perception;Arnheim,1954
2. Einfuhrüng in die informations theoretische Asthetik;Bense,1969
3. Aesthetics and Psychobiology;Berlyne,1971
4. Aesthetic Measure;Birkhoff,1933
5. Ambiguity, beauty and interestingness of line drawings;Boselie;Canadian Journal of Psychology,1983