between 1959 and 1965. Following his Habilitation in 1964, he was appointed to the chair of Statistics and Econometrics at the … Department of Statistics of the University of Waterloo, Canada, in 1970/71. He has been a full professor of Econometrics and … Statistics at the Ludwig-Maximilians-University in Mu­ nich since 1973. His extensive research activities abroad included …