@article{MET_1971__17_175479,
     author = {W. Wetzel},
     title = {Bemerkungen zur {Saisonbereinigung} von \"okonomischen {Zeitreihen}},
     journal = {Metrika},
     pages = {189--196},
     publisher = {mathdoc},
     volume = {17},
     year = {1971},
     zbl = {0215.27102},
     url = {http://geodesic.mathdoc.fr/item/MET_1971__17_175479/}
}