404. That’s an error.

The requested URL /_/+1/confirm?hl=de&url=http%3A%2F%2Fwww.demogr.mpg.de%2Fen%2Fprojects_publications%2Fpublications_1904%2Fbook_chapters%2Fforschungsnetzwerke_als_ffentlichkeitskatalysatoren_fuer_die_wissenschaft_5939.htm%3Fpk_campaign%3Dsm%26pk_kwd%3Dgoogleplus&title=Publications was not found on this server. That’s all we know.