@article{ELMA_1973__28_141102,
     author = {H.-J. Kanold},
     title = {\"Uber einige elementare {Absch\"atzungen} von e.},
     journal = {Elemente der Mathematik},
     pages = {65--67},
     publisher = {mathdoc},
     volume = {28},
     year = {1973},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1973__28_141102/}
}