I would like to thank several people for their helpful hints and cooperation: Mike Fuller (Canterbury), Melvin Olson (Basel), Anthony Rossini (Penn State), Günter Sawitzki (Heidelberg), Volker Weinberger (Heidelberg), numerous list managers, the editors, and the participants of the 26th Conference on Statistical Computing at Schloss Reisensburg, who brought the idea up. The author can be contacted via Email under andreas.krause@chbs.mhs.ciba.com

Andreas Krause
Mon May 15 19:18:23 MET DST 1995