a person in the record
Derk Jan Groen
Doctoral advisors on Wikidata: Ed van den Heuvel, Peter Sloot, and Simon Portegies Zwart.
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-20261014T220004Z