Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MZ_1949__51_169071, author = {E. Kamke and G.G. LORENTZ}, title = {\"Uber das {Dirichletsche} {Prinzip}}, journal = {Mathematische Zeitschrift}, pages = {217--232}, publisher = {mathdoc}, volume = {51}, year = {1949}, zbl = {0030.15602}, url = {http://geodesic.mathdoc.fr/item/MZ_1949__51_169071/} }
E. Kamke; G.G. LORENTZ. Über das Dirichletsche Prinzip. Mathematische Zeitschrift, Tome 51 (1949), pp. 217-232. http://geodesic.mathdoc.fr/item/MZ_1949__51_169071/