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@article{MAN_1973__204_162455, author = {Manfred Wolff}, title = {\"Uber {Korovkin-S\"atze} in lokalkonvexen {Vektorverb\"anden.}}, journal = {Mathematische Annalen}, pages = {49--56}, publisher = {mathdoc}, volume = {204}, year = {1973}, zbl = {0243.41025}, url = {http://geodesic.mathdoc.fr/item/MAN_1973__204_162455/} }
Manfred Wolff. Über Korovkin-Sätze in lokalkonvexen Vektorverbänden.. Mathematische Annalen, Tome 204 (1973), pp. 49-56. http://geodesic.mathdoc.fr/item/MAN_1973__204_162455/