From a0c71bae73b1bd3a46b091990e0f9aaabc82b4aa Mon Sep 17 00:00:00 2001
From: Timo Heister <timo.heister@gmail.com>
Date: Tue, 4 Apr 2017 11:17:50 -0400
Subject: [PATCH] add step-57 DOI

---
 examples/step-57/doc/intro.dox | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/step-57/doc/intro.dox b/examples/step-57/doc/intro.dox
index 396f4eac5a..3a38794a98 100644
--- a/examples/step-57/doc/intro.dox
+++ b/examples/step-57/doc/intro.dox
@@ -8,7 +8,9 @@ Geodynamics initiative (CIG), through the National Science Foundation under
 Award No. EAR-0949446 and The University of California-Davis.
 </i>
 
-<a name="Intro"></a> 
+@dealiiTutorialDOI{10.5281/zenodo.484156,https://zenodo.org/badge/DOI/10.5281/zenodo.484156.svg}
+
+<a name="Intro"></a>
 <h1>Introduction</h1>
 
 <h3> Navier Stokes Equations </h3>
-- 
2.39.5