@article{GDZPPN002277034, title = {The Du Bois-Reymond Relation in the Calculus of Variations}, journal = {Mathematische Annalen}, volume = {109}, year = {1934}, pages = {746-755}, zbl = {0009.17001}, url = {http://dml.mathdoc.fr/item/GDZPPN002277034} }
McShane, E.J. The Du Bois-Reymond Relation in the Calculus of Variations. Mathematische Annalen, Tome 109 (1934) pp. 746-755. http://gdmltest.u-ga.fr/item/GDZPPN002277034/