Kolmogorov, A. N. “Three Approaches to the Quantitative Definition of Information*”. International Journal of Computer Mathematics, vol. 2, no. 1-4, 1968, pp. 157-68, https://doi.org/10.1080/00207166808803030.
Kolmogorov, A. N. (1968). Three approaches to the quantitative definition of information*. International Journal of Computer Mathematics, 2(1-4), 157-168. https://doi.org/10.1080/00207166808803030
Kolmogorov AN. Three approaches to the quantitative definition of information*. International Journal of Computer Mathematics. 1968;2(1-4):157-68.