Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q7350820 |
| RKDartists | https://rkd.nl/explore/artists/424599 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.78270 |
| VIAF | http://viaf.org/viaf/62746819 |
| Adamlink URI | https://adamlink.nl/person/wallis-robert/4594 |
