Geodesic
A stationary and nonstationary $R$-frequency analysis of vibrations of the systems with a finite number of degrees of freedom of vibrations and mutual influences of the harmonics
Theoretical and applied mechanics, Tome 11 (1985) no. 1, p. 73 
Katica ; Stevanović;  Hedrih; Predrag Kozić; Ratko Pavlovi. A stationary and nonstationary $R$-frequency analysis of vibrations of the systems with a finite number of degrees of freedom of vibrations and mutual influences of the harmonics. Theoretical and applied mechanics, Tome 11 (1985) no. 1, p. 73 . http://geodesic.mathdoc.fr/item/TAM_1985_11_1_a6/
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     author = {Katica  and Stevanovi\'c and  Hedrih and Predrag Kozi\'c and Ratko Pavlovi},
     title = {A stationary and nonstationary $R$-frequency analysis of vibrations of the systems with a finite number of degrees of freedom of vibrations and mutual influences of the harmonics},
     journal = {Theoretical and applied mechanics},
     pages = {73 },
     year = {1985},
     volume = {11},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1985_11_1_a6/}
}
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Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

In this paper the first approximation solutions and system of diferen-tial equations of the first approximations for the amplitudes and phases of the four-frequency regime vibrations of the cranshaft with a five disks under conditions a stationary and nonstationary regime nonlinear vibrations, was composed. The numerical example, with various amplitude-frequency curves for stationary and nonstationary resonant states, is enclosed.