a person in the record
Christoph Lehrenfeld
Doctoral advisors on Wikidata: Arnold A. Reusken, Joachim Schöberl, and Marek Behr.
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-20261008T220003Z