Add citation info (#119)

Author: PicoCentauri

README.rst

@@ -63,6 +63,32 @@ Having a problem with torch-pme? Please let us know by `submitting an issue
 Submit new features or bug fixes through a `pull request
 <https://github.com/lab-cosmo/torch-pme/pulls>`_.
 
+.. marker-cite
+
+Reference
+---------
+
+If you use *torch-pme* for your work, please read and cite our preprint available on
+`arXiv`_.
+
+.. code-block::
+
+   @article{loche_fast_2024,
+      title = {Fast and Flexible Range-Separated Models for Atomistic Machine Learning},
+      author = {Loche, Philip and {Huguenin-Dumittan}, Kevin K. and Honarmand, Melika and Xu, Qianjun and Rumiantsev, Egor and How, Wei Bin and Langer, Marcel F. and Ceriotti, Michele},
+      year = {2024},
+      month = dec,
+      number = {arXiv:2412.03281},
+      eprint = {2412.03281},
+      primaryclass = {physics},
+      publisher = {arXiv},
+      doi = {10.48550/arXiv.2412.03281},
+      urldate = {2024-12-05},
+      archiveprefix = {arXiv}
+      }
+
+.. _`arXiv`: http://arxiv.org/abs/2412.03281
+
 .. marker-contributing
 
 Contributors

docs/src/index.rst

@@ -1,5 +1,8 @@
-torch-pme
-#########
+Welcome to the torch-pme Documentation!
+#######################################
+
+Overview
+--------
 
 .. include:: ../../README.rst
     :start-after: marker-introduction
@@ -15,6 +18,10 @@ torch-pme
 
 .. _`vesin`: https://luthaf.fr/vesin
 
+.. include:: ../../README.rst
+    :start-after: marker-cite
+    :end-before: marker-contributing
+
 .. toctree::
    :hidden: