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=François/N=du@Croc@*@du@Mas@et@de@La@Bressoliere
François du Croc * du Mas et de La Bressoliere
alternatively: /cgi-bin/llmult/LANG=germ/P=41003491