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A multimoment analysis of road demand, accidents and their severity in Germany, 1968-1989
Blum, Ulrich, (1999)
An example of correlation among residuals in directly ordered data
Gaudry, Marc J. I., (1988)
Aggregate time series gasoline demand models : review of the literature and new evidence for West Germany
Blum, Ulrich C. H., (1986)