(1950). Contributions to the theory of nonlinear oscillations.5v ed by S Lefschtz.
Chicago Edition CitationContributions to the Theory of Nonlinear Oscillations.5v Ed by S Lefschtz. 1950.
MLA Edition CitationContributions to the Theory of Nonlinear Oscillations.5v Ed by S Lefschtz. 1950.
Warning: These citations may not always be 100% accurate.