1. Early lexical acquisition: The role of cross-situational learning;Akhtar;First Language,1999
2. How to do things with words;Austin,1962
3. Bailey, D., Feldman, J., Narayanan, S., & Lakoff, G. (1997). Modeling embodied lexical development. In Proceedings of the 19th cognitive science society conference, pp. 19–24.
4. Balkenius, C. (1999). Are there dimensions in the brain? In Spinning Ideas, Electronic Essays Dedicated to Peter Gärdenfors on His Fiftieth Birthday. Retrieved from URL .
5. Perceptual symbols systems;Barsalou;Behavioral and Brain Sciences,1999