@article{ELMA_1986__41_141374,
     author = {Erwin Kreyszig},
     title = {Zur {Entwicklung} der zentralen {Ideen} in der {Funktionalanalysis.}},
     journal = {Elemente der Mathematik},
     pages = {25--35},
     publisher = {mathdoc},
     volume = {41},
     year = {1986},
     zbl = {0596.46001},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1986__41_141374/}
}