Update README

README.md

@@ -63,4 +63,26 @@ that they will be empty after you clone the project.  If you would like to
 populate a submodule (i.e., the directory pointing to another repo) to see or
 use its code, run `git submodule init path/to/submodule` to mark it as init-ed.
 Second, run `git submodule update` to populated init-ed submodules.  Run `git
-submodule deinit -f path/to/submodule` to make the submodule empty again.
+submodule deinit -f path/to/submodule` to make the submodule empty again.
+
+
+## Paper
+The work in this repository is associated with [ELCC: the Emergent Language
+Corpus Collection](https://arxiv.org/abs/2407.04158).  The analyses in this
+paper use code provided in https://github.com/brendon-boldt/elcc-analysis.
+
+
+### Citation
+If you use this code or data in academic work, please cite:
+
+    @article{boldt2024elcc,
+      title={{ELCC}: the {E}mergent {L}anguage {C}orpus {C}ollection}, 
+      author={Brendon Boldt and David Mortensen},
+      year={2024},
+      eprint={2407.04158},
+      volume={2407.04158},
+      archivePrefix={arXiv},
+      journal={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2407.04158}, 
+    }