From af92bf53b4a46b86d90f3a4924b5da46fab1315e Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Fri, 15 May 2020 11:02:42 -0600
Subject: [PATCH] Add a reference for step-70.

---
 doc/doxygen/references.bib | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/doc/doxygen/references.bib b/doc/doxygen/references.bib
index e4d9a420ad..83841ad06a 100644
--- a/doc/doxygen/references.bib
+++ b/doc/doxygen/references.bib
@@ -669,6 +669,22 @@ year = {2008},
 }
 
 
+% ------------------------------------
+% Step 70
+% ------------------------------------
+
+@article{Riviere1999,
+  doi = {10.1023/a:1011591328604},
+  url = {https://doi.org/10.1023/a:1011591328604},
+  year = {1999},
+  publisher = {Springer Science and Business Media {LLC}},
+  volume = {3},
+  number = {3/4},
+  pages = {337--360},
+  author = {B{\'{e}}atrice Rivi{\`{e}}re and Mary F. Wheeler and Vivette Girault},
+  journal = {Computational Geosciences}
+}
+
 % ------------------------------------
 % References used elsewhere
 % ------------------------------------
-- 
2.39.5