Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q2300041 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/87298170 |
| RKDartists | https://rkd.nl/explore/artists/39695 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.29037 |
| VIAF | http://viaf.org/viaf/288388502 |
| Adamlink URI | https://adamlink.nl/person/hoppen-gerard/9285 |
