Adding DOI and contributors for improved citations

README.md

@@ -8,7 +8,16 @@ The package is available on the Python Package Index (PyPi), as [quantem](https:
 
 You can install it using `pip install quantem`.
 
-For a developer install, please refer to [CONTRIBUTORS.md](CONTRIBUTORS.md).
+For a developer install, please refer to [CONTRIBUTING.md](CONTRIBUTING.md).
+
+## Citing this work
+
+If you use the `quantem` package in your work, please cite our DOI: [temp link](https://zenodo.org/) 
+
+Additionally, if you use any of the following modules, please cite the relevant paper(s):
+- Diffractive imaging (direct ptychography): [Varnavides et al.](https://arxiv.org/abs/2507.18610) 
+- Diffractive imaging (iterative ptychography): [McCray et al.](https://arxiv.org/abs/2511.07795) 
+- Tomography: [Lim et al.](https://arxiv.org/abs/2512.08113) 
 
 ## License