@article{MET_1962__5_175165,
     author = {F. Ferschl},
     title = {Die industrielle {Produktivit\"at} in neuerer {Sicht} -  {Mathieu,} {J.;} {Gnielinski,} {M.}},
     journal = {Metrika},
     pages = {223--224},
     publisher = {mathdoc},
     volume = {5},
     year = {1962},
     url = {http://geodesic.mathdoc.fr/item/MET_1962__5_175165/}
}