Graves, Lawrence M. On an existence theorem of the calculus of variations. (English) Zbl 0004.15304 Monatsh. Math. Phys. 39, 101-104 (1932). PDFBibTeX XMLCite \textit{L. M. Graves}, Monatsh. Math. Phys. 39, 101--104 (1932; Zbl 0004.15304) Full Text: DOI
Graves, L. M. On an existence theorem of the calculus of variations . (English) JFM 58.0533.01 Monatshefte f. Math. 39, 101-104 (1932). Reviewer: Radon, J., Prof. (Breslau) PDFBibTeX XMLCite \textit{L. M. Graves}, Monatsh. Math. Phys. 39, 101--104 (1932; JFM 58.0533.01) Full Text: DOI