added references on OmniSat (#1)

- added references on OmniSat (7701e3252a8dd2c61eeb35796e3fc8b58112bfa3)


Co-authored-by: osv5m <osv5m@users.noreply.huggingface.co>

README.md

@@ -4,6 +4,7 @@ license: cc-by-4.0
 
 # TreeSatAI-Time-Series
 ****
+This dataset was introduced in the [ECCV24 paper](https://arxiv.org/pdf/2404.08351) Omnisat.
 
 Ahlswede et al. (https://essd.copernicus.org/articles/15/681/2023/) introduced the TreeSatAI Benchmark Archive, a new dataset for tree species classification in Central Europe based on multi-sensor data from aerial, 
 Sentinel-1 and Sentinel-2. The dataset contains labels of 20 European tree species (*i.e.*, 15 tree genera) derived from forest administration data of the federal state of Lower Saxony, Germany. 
@@ -69,3 +70,11 @@ This dataset is licensed under a Creative Commons Attribution-ShareAlike 4.0 Int
 
 ### Contact
 If you have any questions, issues or feedback, you can contact us at: ai-challenge@ign.fr
+
+### Citation
+@article{astruc2024omnisat,
+  title={OmniSat: Self-Supervised Modality Fusion for Earth Observation},
+  author={Astruc, Guillaume and Gonthier, Nicolas and Mallet, Clement and Landrieu, Loic},
+  journal={ECCV},
+  year={2024}
+}