Add two entries.

diff --git a/9.0/paper.bib b/9.0/paper.bib
index 092d47410e9920519b24c1b3564f7b42e462fdbc..627445d7e1a71ae11c2b124fca2be84929ed5171 100644 (file)
--- a/9.0/paper.bib
+++ b/9.0/paper.bib
@@ -637,3 +637,21 @@ year = {2009}
   institution =  {arXiv:1612.03369},
   year =         2016}
 
+
+@Article{KHB12,
+  author =      {M. Kronbichler and T. Heister and W. Bangerth},
+  title =       {High Accuracy Mantle Convection Simulation through Modern Numerical Methods},
+  journal =     {Geophysics Journal International},
+  year =        2012,
+  volume =      191,
+  pages =       {12--29}}
+
+@Article{HDGB17,
+  author =       {T. Heister and J. Dannberg and R. Gassm{\"o}ller and W. Bangerth},
+  title =        {High Accuracy Mantle Convection Simulation through Modern Numerical Methods. II: Realistic Models and Problems},
+  journal =      {Geophysics Journal International},
+  year =         2017,
+  volume =    210,
+  pages =     {833--851}}
+
+