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17.    Sreeniva$amurthy. S. and Ramamurti, V., "A Parametric Study of Vibration of Rotating Pretwisted and Tapered Low Aspect Ratio Cantilever Plates," J. Sound Vib.. 76 (3). pp 311-328(1981).

18.    Thomas, J. and Sambunch, M., "Finite Element Analysis of Rotating Pretwisted Asymmetric Cross-Section Blades," ASME Paper No. 79-DET-95.

19.    Stetson, K.A. and Harrison, I.R., "Redesign of Structural Vibration Modes by Finite Element lnverse Perturbation," ASME Paper No. 90-GT-167.

20.    Abbas, B.A.H., "Simple Finite Elements for Dynamie Analysis of Thick Pre-Twisted Blades," Aeronaut. J., 83 <827), pp 450-453 (1979).

21.    Bucco. D. and Mazumdar, J., "Estimation of the Fundamental Frequencies of Shallow Shells by a Finite Element-Isodeflection Contour Met h od," Computers Struć., 17 (3). pp 441-447 (1983).

22.    Bogomolov, S.I., Lutsenko, S.S., and Nazaren-ko, S.A., "Application of Superparametric Shell Finite Element to the Calculation of Turbinę Blade Vibrations," Problemy Proch-nosti, 156 (6). pp 71-74 (June 1982) (In Rus-sian).

23.    Yargicoglu, I.A., "A Third Element Model with Substructuring for Predicting the Influence of Structural Discontinuities on Composite Rotor Blades," Ph.D. Thesis, Univ. of Texas at Austin, UM 8009955 (1979).

24.    Hoa, S.V., "Vibration Frequency of a Curved Blade with Weighted Edge," J. Sound Vib., 79 (1).pp 107-119 (1981).

25.    Thomas, D.L., "Dynamics of Rotationałly Periodic Structures," Intl. J. Numer. Methods Engrg., 14. pp 81-102(1979).

26.    Mazurkiewicz, M., "Calculations of the Dis-placements and the Natural Frequencies and Modes of Turbomachinery Blades by FEM,"

Archiwum Budowy Maszyn, 27 (4), pp 427-447 (1980) (In Polish).

27.    Bernante. R., Magneschi, P„ and Macchi, A., "Effect of Packetting on Turbinę Blade Vibra-tion," Energia Elettrica, 59 (10), pp 247-257 (1982).

28.    Salama, A.L. and Petyt, M., "Dynamie Re-sponse of Packets of Blades by the Finite Element Method." J. Mech. Des., Trans. ASME, 100 (4). pp 660-666 (1978).

29.    Smith, D.R. and Norwood. M.E., *"PVAST' a Finite Element Program for Propeller Vibra-tion and Strength Analysis." Intl. Modal Analysis Conf., Proc., Orlando. FL, spons. Union College, Schenectady. NY, pp 679-685 (Nov 8-10.1982).

30.    Sheng, C. and Mosimann, J.G., "The Effect of Blade Discretization on Resonant Turbinę Blade Response." ASME Paper No. 83-GT-158.

31.    Jadwani, H.M. and Rao, J.S., "Forced Vibra-tions of Rotating Pretwisted Blades," Energia Elettrica. 59 (10). pp 259-265 (1982).

32.    Wang, A.I., "Vibration Analysis of Turbomachinery Blades by Shell Theory," Ph.D. Thesis, Ohio State Univ.. DA 8305407 (1982).

33.    Rawn-Jensen, Kim, "Shell Analysis of Turbinę Blade Vibrations," Intl. J. Mech. Sci., 24 (10), pp 581-587(1982).

34.    Leissa, A.W., Lee. J.K., and Wang. A.J., "Rotating Blade Vibration Analysis Using Shells," J. Engrg. Power, Trans. ASME, 104, pp 296-302(1982).

35.    Lee, J.K., Leissa, A.W., and Wang, A.J., "Vi-brations of Cantilevered Circular Cylindrical Shells; Shallow versus Deep Shell Theory," Intl. J. Mech. Sci.. 25 (5), pp 361-383 (1983).

36.    Subrahmanyam, K.B., Kulkami, S.V.,and Rao, J.S., "Analysis of Lateral Vibrations of Rotating Cantilever Blades Allowing for Sheer Deflection and Rot8ry Inertia," Mech. Mach. Theory. 17 (4). pp 235-241 (1982).

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