I just stumbled across what might be a bug (or feature 8-) in how short-ids are generated. It is my understanding that the short-id is generated by concatenating 'p', the first two ascii characters in the last name and a sequence number. But there is at least one registered person with less than two ascii characters in the registered last name, http://econpapers.repec.org/RAS/pa1.htm, leading to an unexpected form for the short-id 'pa1'. It is probably highly unusual but I guess possible for someone to have a "western" last name with no ascii characters. If such a person registers and does not provide an "english" version of the name we could end up with a short-id 'p1' and that causes problems given the way the files are organized in the per archive. /Sune -- Sune Karlsson New e-mail: Sune.Karlsson@oru.se Professor of Statistics Handelshögskolan/Swedish Business School Örebro University, SE-70182 Örebro, Sweden Phone +46 19 301257 http://www.oru.se/esi/karlsson http://econpapers.repec.org/RAS/pka1.htm