Damerow, Peter Department Structural Changes in Systems of Knowledge, Max Planck Institute for the History of Science, Max Planck Society;
Damerow, P. (2001). Number systems, evolution of. In N. J. Smelser, & P. B. Baltes (Eds.), International encyclopedia of the social and behavioral sciences. Vol. 16 (pp. 10753-10756). Oxford [u.a.]: Pergamon.