@article{ELMA_1994__49_1_141561,
     author = {Serge Lang},
     title = {Approximationss\"atze der {Analysis.}},
     journal = {Elemente der Mathematik},
     pages = {92--103},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {1994},
     zbl = {0813.41001},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1994__49_1_141561/}
}