Update README.md

README.md

@@ -54,7 +54,7 @@ Code here: [https://github.com/smith42/astroPT](https://github.com/smith42/astro
 
 Upstream catalogue is [on Zenodo](https://zenodo.org/records/8360385) and paper describing the catalogue is available as [Walmsley+2023](https://doi.org/10.1093/mnras/stad2919).
 
-If you find this dataset useful please consider citing the upstream sources below 🚀🚀:
+If you find this dataset useful please consider citing the sources below 🚀🚀:
 
 ```
 @article{ref_dey2019,
@@ -84,4 +84,15 @@ If you find this dataset useful please consider citing the upstream sources belo
 	publisher = {Oxford Academic},
 	doi = {10.1093/mnras/stad2919}
 }
+```
+
+```
+@article{ref_smith2024,
+	author = {Smith, M. J. and Roberts, R. J. and Angeloudi, E. and Huertas-Company, M.},
+	title = {{AstroPT: Scaling Large Observation Models for Astronomy}},
+	journal = {ArXiv e-prints},
+	year = {2024},
+	eprint = {2405.14930},
+	doi = {10.48550/arXiv.2405.14930}
+}
 ```