1. [1] M.G. Krein, On a fundamental approximation problem in the theory of extrapolation and filtration of stationary random processes, Dokl. Acad. Nauk SSSR, 94 (1954a), 13-16 1)[English transl: Amer. Math. Soc. Selected Transl. Math. Statist. Prob., 4 (1964), 127-131].
2. [2] N. Wiener, Non-linear prediction and dynamics, Proc. of Third Berkeley Symposium on Mathematical Statistics and Probability, Volume III, 1956, 247-252.
3. [3] R. Kubo, Statistical mechanical theory of irreversible processes I, general theory and simple applications to magnetic and conduction problem, J. Phys. Soc. Japan, 12 (1957), 570-586.
4. [4] P. Masani and N. Wiener, Non-linear prediction, Probability and Statistics, The Harald Cramér Volume (ed. by U. Grenander), John Wiley, 1959, 190-212.
5. [5] H. Mori, Transport, collective motion and Brownian motion, Progr. Theoret. Phys, 33 (1965), 423-455.