1. “Matrix Eigen System Routines: EISPACK Guide.”;Smith,1974
2. “Elements of Vibration Analysis.”;Meirovitch,1975
3. “Random Data: Analysis and Measurement Procedures.”;Bendat,1971
4. “Random Vibrations in Mechanical Systems.”;Crandall,1963
5. “Dynamics of Structures.”;Hurley,1964