RelBib: Results for "(11853856x OR 11853453x)" https://relbib.de/search/results?filter[]=~author_facet:"George, Stefan 1868-1933"&filter[]=~author_facet:"Sieg, Ulrich 1960-"&filter[]=~format:"Article"&lookfor=(11853856x OR 11853453x)&type=AllFields