@article{MZ_1949__51_169100,
     author = {LORENTZ. G. G..},
     title = {Minimalfolgen und das {Dirichletsche} {Prinzip}},
     journal = {Mathematische Zeitschrift},
     pages = {696--699},
     publisher = {mathdoc},
     volume = {51},
     year = {1949},
     url = {http://geodesic.mathdoc.fr/item/MZ_1949__51_169100/}
}