Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1935__110_159722, author = {W. Damk\"ohler}, title = {\"Uber indefinite {Variationsprobleme}}, journal = {Mathematische Annalen}, pages = {230--283}, publisher = {mathdoc}, volume = {110}, year = {1935}, zbl = {60.0455.02}, url = {http://geodesic.mathdoc.fr/item/MAN_1935__110_159722/} }
W. Damköhler. Über indefinite Variationsprobleme. Mathematische Annalen, Tome 110 (1935), pp. 230-283. http://geodesic.mathdoc.fr/item/MAN_1935__110_159722/