TY  - BOOK
AU  - Lefschetz,Solomon
TI  - Contributions to the theory of nonlinear oscillations
PY  - 1950///
CY  - Princeton : 
PB  - Priceton University Press, 
KW  - VIBRACIONES
KW  - ACUSTICA
KW  - VIBRACIONES MECANICAS
KW  - OSCILACIONES
N1  - En dos volúmenes; On systems of ordinary differential equations / Diliberto. S. P; Oscillations of a third order nonlinear autonomous system / Rauch. L. L; Nonlinear Difference-Differential Equations / Brownell. F. H; Forced oscillations in nonlinear Systems / Cartwright. M. L; Singular perturbations of a Van der Pol Equation/ Wendel. J. G; The existence of forced periodic solutions of second order differential equations near certain equilibrium points of the unforced equation / Langenhop. C. E; The construction of periodic solutions of singular perturbation problems / Wasow, Wolfgang
ER  -