1. Abraham, T. Rebel (2016) Genius: Warren S. McCulloch’s Transdisciplinary Life in Science. MIT Press, Cambridge.
2. Black, M. (1937) Vagueness: An Exercise in Logical Analysis. Philosophy of Science 4(4): 427–455.
3. Bentivoglio, M. (2014) “Golgi, Camillo”. In Daroff, Robert B.; Aminoff, Michael J. Encyclopedia of the Neurological Sciences (Second edition. ed.). Burlington: Elsevier Science. 464–466.
4. Darwin, D. and Huxley, J. (2003) The Origin of Species: 150th Anniversary Edition. Signet; Reprint, Anniversary edition.
5. Fausett, L. (1994) Fundamentals of Neural Networks Architectures Algorithms and Applications. Prentice Hall.