Feigenson, L., Dehaene, S. & Spelke, E. S. (2004). Core systems of number. Trends in Cognitive Sciences, 8(10), 307-314.
http://www.wjh.harvard.edu/~lds/index.html?spelke.html
Feigenson, L., Dehaene, S. & Spelke, E. S. (2004). Core systems of number. Trends in Cognitive Sciences, 8(10), 307-314.
http://www.wjh.harvard.edu/~lds/index.html?spelke.html