1. On the soul, parva naturalia, on breath;Aristotle,1957
2. Integration and interruption in the masking of form by form;Bachmann;Perception,1976
3. Textural segmentation;Beck,1982
4. Bolk, L. (1926). Das problem der menschwerdung [The problem of human evolution]. University paper, University of Jena
5. Birkhoff revisited: Beauty as a function of effect and means;Boselie;American Journal of Psychology,1985