a person in the record
Mathijn Jan Retel Helmrich
Doctoral advisors on Wikidata: Albert Wagelmans, Raf Jans, and Wilco van den Heuvel.
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-20261008T172418Z