Institution: | 1 Department of Statistics and Demography, University of Southern Denmark, Sdr.Boulevard 23A, DK-5000 Odense C, Denmark pvl{at}statdem.sdu.dk 2 Department of Statistics, University of Aarhus, DK-8000 Aarhus, Denmark preben{at}imf.aau.dk mks{at}imf.aau.dk |