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Contributions to the Theory of Nonlinear Oscillations, Volume I. (AM-20) (Annals of Mathematics Studies) (v. 1)
Contributions to the Theory of Nonlinear Oscillations Volume I - AM-20 - Annals of Mathematics Studies - v. 1 Author:Solomon Lefschetz Annals of Mathematics Studies: Number 41The present volume of the Contributions, fourth in the series, covers, like its predecessors, a great variety of topics in non-linear differential equations.