@article{MET_1963__7_175209,
     author = {O. Heinisch},
     title = {Methoden und {Probleme} der {Unternehmensforschung} -  {Sasieni,} {A;} {Yaspan,} {A.;} {Friedmann,} {L.}},
     journal = {Metrika},
     pages = {159--159},
     publisher = {mathdoc},
     volume = {7},
     year = {1963},
     url = {http://geodesic.mathdoc.fr/item/MET_1963__7_175209/}
}