Note that the index numbers are only technical numbers which have no persistence. After a new system generation is done, all of them are invalid. To generate a persistent link, use the name.Use the URL:
http://ww-person.com/cgi-bin/l3/LANG=germ/F=Bernat@Ató@V/N=de@Nimes@i@d'Agde
Bernat Ató V de Nimes i d'Agde
alternatively: /cgi-bin/llmult/LANG=germ/P=13002494