where to find the optixGlass-dragon model?

Where can I find the beautiful dragon model used in the following rendering? (If it’s publicly available)

The link is at the bottom of this page, which is the README.md in that folder:
[url]https://github.com/nvpro-samples/optix_advanced_samples/tree/master/src/optixGlass[/url]

Thanks Detlef.