Struble, Raimond A.; Fletcher, John E. General perturbational solution of the harmonically forced van der Pol equation. (English) Zbl 0111.28802 J. Math. Phys. 2, 880-891 (1961). Reviewer: Gerhard Maeß (Rostock) MSC: 34E05 34E10 PDFBibTeX XMLCite \textit{R. A. Struble} and \textit{J. E. Fletcher}, J. Math. Phys. 2, 880--891 (1961; Zbl 0111.28802) Full Text: DOI
de Bruijn, N. G. Asymptotic methods in analysis. (Асимптотические методы в анализе. Translated from the English.) (Russian. English original) Zbl 0098.26404 Moskau: Verlag für ausländische Literatur. 247 S. (1961). MSC: 26-01 26A18 26B10 34E05 41A60 44A10 65F10 PDFBibTeX XML