Update README.md

Update author list and make references explicit.

README.md

@@ -8,8 +8,7 @@
 
 # PROTEUS Framework for Planetary Evolution
 
-**PROTEUS** is a Python framework that simulates the coupled evolution
-of the atmospheres and interiors of rocky planets.
+**PROTEUS** is a modular Python framework that simulates the coupled evolution of the atmospheres and interiors of rocky planets.
 
 ## Installation instructions
 
@@ -29,14 +28,10 @@ Harrison Nicholls       | harrison.nicholls[at]physics.ox.ac.uk |
 Laurent Soucasse        | l.soucasse[at]esciencecenter.nl |
 Stef Smeets             | s.smeets[at]esciencecenter.nl |
 Dan J. Bower            | dbower[at]ethz.ch |
-Mariana V. Sastre       | m.c.villamil.sastre[at]rug.nl |
+Mariana Sastre       | m.c.villamil.sastre[at]rug.nl |
 Emma Postolec           | e.n.postolec[at]rug.nl |
 Mark Hammond            | mark.hammond[at]physics.ox.ac.uk |
-Patrick Sanan           | patrick.sanan[at]gmail.com |
 Raymond Pierrehumbert   | raymond.pierrehumbert[at]physics.ox.ac.uk |
-Ryan Boukrouche         | ryan.boukrouche[at]astro.su.se |
-Shang-Min Tsai          | shangmin.tsai[at]ucr.edu |
-Hamish Innes            | hamish.innes[at]fu-berlin.de |
 
 ## Repository structure
 
@@ -49,5 +44,39 @@ Hamish Innes            | hamish.innes[at]fu-berlin.de |
 | `src/proteus`         | Source code for PROTEUS                                   |
 | `output/`             | Output folder with subfolders for each model run          |
 | `input/`              | Input folder (e.g. stellar spectra, example configs)      |
-| `docs/`			    | Documentation source files                                |
+| `docs/`			          | Documentation source files                                |
 | `examples/`           | Example cases that the model should be able to reproduce  |
+
+## Citation
+
+If you make use of PROTEUS, please reference the following manuscripts, and state the code version used.
+
+```
+@ARTICLE{Lichtenberg2021JGRP,
+       author = {{Lichtenberg}, Tim and {Bower}, Dan J. and {Hammond}, Mark and {Boukrouche}, Ryan and {Sanan}, Patrick and {Tsai}, Shang-Min and {Pierrehumbert}, Raymond T.},
+        title = "{Vertically Resolved Magma Ocean-Protoatmosphere Evolution: H$_{2}$, H$_{2}$O, CO$_{2}$, CH$_{4}$, CO, O$_{2}$, and N$_{2}$ as Primary Absorbers}",
+      journal = {Journal of Geophysical Research (Planets)},
+         year = 2021,
+        month = feb,
+       volume = {126},
+       number = {2},
+          eid = {e06711},
+        pages = {e06711},
+          doi = {10.1029/2020JE006711},
+archivePrefix = {arXiv},
+       eprint = {2101.10991},
+ primaryClass = {astro-ph.EP},
+       adsurl = {https://ui.adsabs.harvard.edu/abs/2021JGRE..12606711L}
+}
+
+@ARTICLE{Nicholls2025JGRP,
+       author = {{Nicholls}, Harrison and {Lichtenberg}, Tim and {Bower}, Dan J. and and {Pierrehumbert}, Raymond T.},
+        title = "{Magma ocean evolution at arbitrary redox state}",
+      journal = {Journal of Geophysical Research (Planets)},
+         year = 2025,
+        pages = {submitted},
+       adsurl = {https://ui.adsabs.harvard.edu/abs/2021JGRE..12606711L}
+}
+```
+
+Please see the relevant sub-modules (e.g., [JANUS]([url](https://github.com/FormingWorlds/JANUS)), [MORS]([url](https://github.com/FormingWorlds/MORS)), [SOCRATES]([url](https://github.com/nichollsh/SOCRATES)), [AGNI]([url](https://github.com/nichollsh/AGNI)), [SPIDER]([url](https://github.com/djbower/spider)), [CALLIOPE]([url](https://github.com/FormingWorlds/CALLIOPE)), [ZEPHYRUS]([url](https://github.com/FormingWorlds/ZEPHYRUS))) for further references.