@article{MET_1963__7_175207,
     author = {F. Korenjak},
     title = {Vertical {Models} for {Economic} {Development} and {Cycles.}},
     journal = {Metrika},
     pages = {121--142},
     publisher = {mathdoc},
     volume = {7},
     year = {1963},
     url = {http://geodesic.mathdoc.fr/item/MET_1963__7_175207/}
}