@article{MAN_1903__57_158113,
     author = {M. Lerch},
     title = {\"Uber die arithmetische {Gleichung} {Cl} ( ....) =1.},
     journal = {Mathematische Annalen},
     pages = {568--570},
     publisher = {mathdoc},
     volume = {57},
     year = {1903},
     zbl = {34.0242.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1903__57_158113/}
}