@article{MZ_1929__30_168105,
     author = {G. v. Alexitis},
     title = {\"Uber eine {Hadamardsche} {Fragestellung}},
     journal = {Mathematische Zeitschrift},
     pages = {43--46},
     publisher = {mathdoc},
     volume = {30},
     year = {1929},
     zbl = {55.0163.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1929__30_168105/}
}