@article{MZ_1936__40_168617,
     author = {J. Karamata},
     title = {\"Uber einen {Konvergenzsatz} des {Herrn} {Knopp}},
     journal = {Mathematische Zeitschrift},
     pages = {421--425},
     publisher = {mathdoc},
     volume = {40},
     year = {1936},
     zbl = {61.0217.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1936__40_168617/}
}