1. The Extrapolation, Interpolation and Smoothing of Stationary Time-Series;Wiener,1949
2. An optimisation theory for time-varying linear systems with non-stationary statistical inputs.;Booton;Proc. Inst. Radio Engrs,1952
3. Optimum non-linear filters.;Zadeh;J. appl. Phys.,1953
4. Methods of Mathematical Physics;Courent,1953