@article{JRAM_1932__166_183466,
     author = {Kurt Mahler},
     title = {Zur {Approximation} der {Exponentialfunktion} und des {Logarithmus.} {Teil} {I.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {118--150},
     publisher = {mathdoc},
     volume = {166},
     year = {1932},
     zbl = {0003.38805},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1932__166_183466/}
}