From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Wed, 29 Mar 2023 23:46:42 +0000 (-0600)
Subject: Add more comments and reference a paper.
X-Git-Tag: v9.5.0-rc1~315^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F14987%2Fhead;p=dealii.git

Add more comments and reference a paper.
---

diff --git a/doc/doxygen/references.bib b/doc/doxygen/references.bib
index ef87c6a1f2..72d2f09224 100644
--- a/doc/doxygen/references.bib
+++ b/doc/doxygen/references.bib
@@ -44,6 +44,18 @@
   url =     {https://doi.org/10.1007/s10915-019-01102-1}
 }
 
+@article{KronbichlerWall2018,
+  author    = {Kronbichler, Martin and Wall, Wolfgang A.},
+  title     = {A Performance Comparison of Continuous and Discontinuous Galerkin Methods with Fast Multigrid Solvers},
+  journal   = {SIAM Journal on Scientific Computing},
+  year      = {2018},
+  volume    = {40},
+  number    = {5},
+  pages     = {A3423--A3448},
+  url       = {https://epubs.siam.org/doi/10.1137/16M110455X},
+  doi       = {10.1137/16M110455X}
+}
+
 %-------------------------------------------------------------------------------
 % Step 10
 %-------------------------------------------------------------------------------
diff --git a/examples/step-7/doc/results.dox b/examples/step-7/doc/results.dox
index ee404b7382..2c1906923f 100644
--- a/examples/step-7/doc/results.dox
+++ b/examples/step-7/doc/results.dox
@@ -296,3 +296,9 @@ linear system solver we use in this program is not perfect -- its run
 time grows faster than proportional to the linear system size -- and
 picking a better linear solver might be appropriate for this kind of
 comparison.
+
+To see how a comparison of this kind could work, take a look at
+@cite KronbichlerWall2018 , and specifically Figure 5
+that illustrates the error as a function of compute time for
+a number of polynomial degrees (as well as a number of different ways
+to discretize the equation used there).