1. Curto, C., Itskov, V.: Cell groups reveal structure of stimulus space. PLoS Comput. Biol. 4(10), 1–13 (2008)
2. Curto, C., Itskov, V., Veliz-Cuba, A., Youngs, N.: The neural ring: an algebraic tool for analysing the intrinsic structure of neural codes. Bull. Math. Biol. 75(9), 1571–1611 (2013)
3. Dehaine, S., Brannon, E. (eds.): Space, time and number in the brain. Elsevier Academic Press, Amsterdam (2011)
4. Dehaene, S., Mehler, J.: Cross-linguistic regularities in the frequency of number words. Cognition 43, 1–29 (1992)
5. Delahaye, J.-P.: Les entiers ne naissent pas égaux. Pour la Science 421, 80–85 (2012)