RelBib: Results for "(((11850522x OR 11850021x) OR 11850553x) OR 11860922x)*" https://relbib.de/search/results?filter[]=~author_facet:"Petzoldt, Martin 1946-2015"&lookfor=(((11850522x OR 11850021x) OR 11850553x) OR 11860922x)*&type=AllFields