diff --git a/doc/handbook/.gitignore b/doc/handbook/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..a1981f3ad5b3b54c37d30b694535eec520df381d
--- /dev/null
+++ b/doc/handbook/.gitignore
@@ -0,0 +1,2 @@
+#Ignore jabref backup files
+*.bak
diff --git a/doc/handbook/dumux-handbook.bib b/doc/handbook/dumux-handbook.bib
index 27d3c3650535c1e0f5b0c716513bcffeb8b35de8..96c774ad67a619366d702408a34f3f11d73adec4 100644
--- a/doc/handbook/dumux-handbook.bib
+++ b/doc/handbook/dumux-handbook.bib
@@ -1029,6 +1029,19 @@
   number = {4}
 }
 
+@Article{Pebesma1998a,
+  author =   {Edzer J. Pebesma and Cees G. Wesseling},
+  title =    {{Gstat: a program for geostatistical modelling, prediction and simulation}},
+  journal =  {Computers \& Geosciences},
+  year =     {1998},
+  volume =   {24},
+  pages =    {17--31},
+  number =   {1},
+  doi =      {http://dx.doi.org/10.1016/S0098-3004(97)00082-4},
+  issn =     {0098-3004},
+  url =      {http://dx.doi.org/10.1016/S0098-3004(97)00082-4}
+}
+
 @BOOK{PRANDTL2002,
   title = {{F\"{u}hrer durch die Str\"{o}mungslehre}},
   publisher = {Vieweg},
diff --git a/dumux/material/spatialparams/gstatrandomfield.hh b/dumux/material/spatialparams/gstatrandomfield.hh
index 33289d2097351dba75624f1614ddb0484d54d976..929a5eb06ccf96a98c2a6256a8ba865cada35ef9 100644
--- a/dumux/material/spatialparams/gstatrandomfield.hh
+++ b/dumux/material/spatialparams/gstatrandomfield.hh
@@ -38,7 +38,8 @@ namespace Dumux
  * \brief Creating random fields using gstat
  *
  * gstat is an open source software tool which can (among other things) generate
- * geostatistical random fields (see <a href="http://www.gstat.org">http://www.gstat.org</a>).
+ * geostatistical random fields (see <a href="http://www.gstat.org">http://www.gstat.org</a>
+ * or \cite Pebesma1998a).
  *
  * To use this class, execute the installexternal.sh from your DuMuX root
  * directory or donwload, unpack and install the tarball from the gstat-website.