@article{MET_1973__20_175582,
     author = {E. F\"urst},
     title = {Die {\"Uberpr\"ufung} produktionstheoretischer {Hypothesen} f\"ur {Deutschland}  -  {Gahlen,} {B.}},
     journal = {Metrika},
     pages = {79--79},
     publisher = {mathdoc},
     volume = {20},
     year = {1973},
     url = {http://geodesic.mathdoc.fr/item/MET_1973__20_175582/}
}