@article{IM_1966__2_141858,
     author = {M. EICHLER},
     title = {Eine {Spurformel} f\"ur {Korrespondenzen} von algebraischen {Funktionenk\"orpern} mit sich selber.},
     journal = {Inventiones mathematicae},
     pages = {274--300},
     publisher = {mathdoc},
     volume = {2},
     year = {1966},
     zbl = {0203.53502},
     url = {http://geodesic.mathdoc.fr/item/IM_1966__2_141858/}
}