Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q20859766 |
| RKDartists | https://rkd.nl/explore/artists/86402 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.33465 |
| Adamlink URI | https://adamlink.nl/person/zijlstra-ger/3517 |
| WikiData URI | http://www.wikidata.org/entity/Q20859766 |
| RKDartists | https://rkd.nl/explore/artists/86402 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.33465 |
| Adamlink URI | https://adamlink.nl/person/zijlstra-ger/3517 |