Contributions to the theory of nonlinear oscillations. / Lefschetz, Solomon. ed.; -- Princeton : Priceton University Press, 1950.
350 p.
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
531.14
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