add reference to arxiv

README.md

@@ -9,4 +9,13 @@ license: mit
 suggested_hardware: a10g-small
 ---
 
-Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference
+This is a demo for our paper, ["PPSurf: Combining Patches and Point Convolutions for Detailed Surface Reconstruction"](https://arxiv.org/abs/2401.08518)
+
+```
+@article{erler2024ppsurf,
+  title={PPSURF: Combining Patches and Point Convolutions for Detailed Surface Reconstruction},
+  author={Erler, Philipp and Fuentes, Lizeth and Hermosilla, Pedro and Guerrero, Paul and Wimmer, Renato Pajarola Michael},
+  journal={arXiv preprint arXiv:2401.08518},
+  year={2024}
+}
+```