add citation

docs/src/index.md

@@ -3,17 +3,19 @@
 `Sainsc.jl` - Segmentation-free analysis of in situ capture data[^1] - is,
 as the name states, a tool to analyse in situ capture-based spatial
 transcriptomics data. Actually, it can also be used to analyse imaging-based datasets.
-For a more thorough background please refer to the
-[original publication](https://TODO)
+For a more thorough background please refer to the original publication.
 or just follow along the provided examplary analysis.
 
 A more _batteries included_[^2] version of this package is available in Python/Rust.
 If you are interested have a look at [https://github.com/HiDiHlabs/sainsc](https://github.com/HiDiHlabs/sainsc).
 
 ## Citation
 
-If you use `Sainsc.jl` for your research please consider citing
-TODO
+If you are using `Sainsc.jl` for your research please consider citing
+
+Müller-Bötticher, N., Tiesmeyer, S., Eils, R., and Ishaque, N.
+"Sainsc: a computational tool for segmentation-free analysis of in-situ capture"
+bioRxiv (2024) [https://doi.org/10.1101/2024.08.02.603879](https://doi.org/10.1101/2024.08.02.603879)
 
 ## Installation