1. Measurement and Analysis of Random Data;Bendat,1966
2. On the harmonic analysis of evolutionary random vibration;Roberts;J. Sound Vib.,1965
3. Power spectral analysis of non-stationary random processes;Prmstley;J. Sound Vib.,1967
4. Evolutionary spectra and non-stationary processes;Priestley;Jl. R. statist. Soc., B,1965
5. Transient response of a dynamic system under random excitation;Caughey;J. appl. Mech. Series E,1961