Modified Straightforward Expansion
Tài liệu tham khảo
Mickens, R.E., 'Comments on the Shohat expansion', J. Sound & Vibration 193(3), (1996) 747–749.
Bellman, R., Perturbation Techniques in Mathematics, Physics, and Engineering, Holt, Rinehart andWinston, New York, 1964.
He, J.H., 'A new perturbation technique which is also valid for large parameters', J. Sound & Vibration (accepted).