| Provider Name | Provider Code | URI |
|---|---|---|
| Pointer Methods in RDF | ptr |
https://www.w3.org/2009/pointers#Pointer |
| Pointer Methods in RDF (RDF) | rdf |
https://www.w3.org/2009/pointers#Pointer |
| Bioregistry | bioregistry |
https://bioregistry.io/ptr:Pointer |