a person in the record
Machiel Keestra
Doctoral advisors on Wikidata: Frank J. M. M. Veltman and Michiel van Lambalgen.
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