a person in the record
Retha Heymann
Doctoral advisors on Wikidata: Rainer Nagel, Stefan Teufel, and Tanja Eisner.
Advisors on Wikidata
Wikidata's own statements of who supervised whom, kept apart from the record's theses and never counted with them.
Wikidata run graph-wikidata-20261015T220004Z