Busemann, Herbert; Mayer, Walther On the foundations of calculus of variations. (English) Zbl 0024.41703 Trans. Am. Math. Soc. 49, 173-198 (1941). PDFBibTeX XMLCite \textit{H. Busemann} and \textit{W. Mayer}, Trans. Am. Math. Soc. 49, 173--198 (1941; Zbl 0024.41703) Full Text: DOI
Busemann, H.; Mayer, W. On the foundations of calculus of variations. (English) JFM 67.1036.03 Trans. Amer. math. Soc. 49, 173-198 (1941). Reviewer: Radon, J., Prof. (Breslau) PDFBibTeX XMLCite \textit{H. Busemann} and \textit{W. Mayer}, Trans. Am. Math. Soc. 49, 173--198 (1941; JFM 67.1036.03) Full Text: DOI