diff --git a/doc/CFDEMcoupling_install.txt b/doc/CFDEMcoupling_install.txt
index 7878649b..b4634e3e 100644
--- a/doc/CFDEMcoupling_install.txt
+++ b/doc/CFDEMcoupling_install.txt
@@ -189,7 +189,7 @@ cfdemCompLIG :pre
 
 If the compilation fails with a message like
 
-No rule to make target `/usr/lib/libpython2.7.so' :pre
+No rule to make target '/usr/lib/libpython2.7.so' :pre
 
 you probably need to create a symbolic link to the library in question.
 
diff --git a/doc/cfdemSolverMultiphase.txt b/doc/cfdemSolverMultiphase.txt
index d655bc97..6f7a08a3 100644
--- a/doc/cfdemSolverMultiphase.txt
+++ b/doc/cfdemSolverMultiphase.txt
@@ -33,7 +33,7 @@ For more details, see "Vångö et al. (2018)"_#Vångö2018.
 
 :link(Vångö2018)
 [(Vångö2018)] M. Vångö, S. Pirker, T. Lichtenegger. (2018):
-"Unresolved CFD–DEM modeling of multiphase flow in densely packed particle beds",
+"Unresolved CFD-DEM modeling of multiphase flow in densely packed particle beds",
 Applied Mathematical Modelling
 
 :line
diff --git a/doc/smoothingModel_temporalSmoothing.txt b/doc/smoothingModel_temporalSmoothing.txt
index 7be01983..eb6136e5 100644
--- a/doc/smoothingModel_temporalSmoothing.txt
+++ b/doc/smoothingModel_temporalSmoothing.txt
@@ -47,7 +47,7 @@ performed on a separate (smooth) field which uses the calculated (un-smooth)
 field as a reference.
 Thus its usage is limited and CANNOT be used to smooth the exchange fields
 similar to other smoothing models.
-For further information see Vångö et al., "Unresolved CFD–DEM modeling of
+For further information see Vångö et al., "Unresolved CFD-DEM modeling of
 multiphase flow in densely packed particle beds", Appl. Math. Model. (2018).
 
 [Restrictions:]