1、H. Nyquist. 1924. Certain Factors Affecting Telegraph Speed. http://www.alcatel-lucent.com/bstj/vol03-1924/articles/bstj3-2-324.pdf 2、Norbert Wiener. 1930. Generalized Harmonic Analysis. 2、Wiener1930.pdf 3、A. M. Turing. 1936. On Computable Numbers, with an Application to the ...