Statistical inference and methods : proceedings of the 6th Pannonian Symposium on Mathematical Statistics, Bad Tatzmannsdorf, Austria, September 14-20, 1986 - Pannonian Symposium on Mathematical Statistics; Bauer, P; Konecny, F.; Wertz, Wolfgang (Mathematical statistics and probability theory / edited by P. Bauer, F. Konecny and W. Wertz, 1987)