@article{GDZPPN002447835, title = {Trendextrapolation bei Zeitreihen.}, journal = {Metrika}, volume = {4}, year = {1961}, pages = {237-246}, zbl = {0107.13902}, url = {http://dml.mathdoc.fr/item/GDZPPN002447835} }
Wartmann, R. Trendextrapolation bei Zeitreihen.. Metrika, Tome 4 (1961) pp. 237-246. http://gdmltest.u-ga.fr/item/GDZPPN002447835/