From 293aae3411c73cafdabbd71f16d79789eec83c50 Mon Sep 17 00:00:00 2001
From: Chenxing Luo <chenxing.luo@gmail.com>
Date: Wed, 2 Jun 2021 21:51:51 -0400
Subject: [PATCH 1/2] Update README.md

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index bb9defa..54249ab 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,8 @@ elast:
     mode_gamma:
       interpolator: spline
       order: 3
-    system: cubic
+    symmetry:
+      system: cubic
 output:
   pressure_base:
     - cij

From e9541b28fdc6cfb4faa4493e654f940201ed4085 Mon Sep 17 00:00:00 2001
From: Chenxing Luo <chenxing.luo@gmail.com>
Date: Thu, 17 Jun 2021 23:52:19 -0400
Subject: [PATCH 2/2] Update README.md

---
 README.md | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/README.md b/README.md
index 54249ab..60ec205 100644
--- a/README.md
+++ b/README.md
@@ -155,6 +155,14 @@ See [GitHub pages][2].
 [![codecov](https://codecov.io/gh/MineralsCloud/cij/branch/dev/graph/badge.svg?token=Ln1Fo4vNBE)](https://codecov.io/gh/MineralsCloud/cij)
 [![pypi](https://img.shields.io/pypi/v/cij.svg)](https://pypi.org/project/cij/)
 
+## How to cite
+
+If you use this software in any publication, please cite:
+
+Luo, C., Deng, X., Wang, W., Shukla, G., Wu, Z., & Wentzcovitch, R. M. (2021). cij: A Python code for quasiharmonic thermoelasticity. *Computer Physics Communications*, 108067. https://doi.org/10.1016/j.cpc.2021.108067
+
+The paper is also available from arXiv: https://arxiv.org/abs/2101.12596
+
 ## Licence
 
 Released under [GNU GPLv3](./LICENCE) license.