diff --git a/src/bias/MovingRestraint.cpp b/src/bias/MovingRestraint.cpp
index c32c467c27702218283ba6ef8343b3e7349dc318..457d112828837f7b200fef247bc2c7703a46d752 100644
--- a/src/bias/MovingRestraint.cpp
+++ b/src/bias/MovingRestraint.cpp
@@ -47,6 +47,8 @@ STEP, KAPPA and AT keywords.  These keywords tell plumed what values \f$\kappa\f
 should have at the time specified by the corresponding STEP keyword.  Inbetween these times
 the values of \f$\kappa\f$ and \f$\vec{s}_0\f$ are linearly interpolated.
 
+Additional material and examples can be also found in the tutorial \ref belfast-5 
+
 \par Examples
 The following input is dragging the distance between atoms 2 and 4
 from 1 to 2 in the first 1000 steps, then back in the next 1000 steps.
diff --git a/src/bias/Restraint.cpp b/src/bias/Restraint.cpp
index 01488b71ed92d4022108f71b39ba66b383aa472d..15b121088bea2abe525f7bef1e397d5be6f13702 100644
--- a/src/bias/Restraint.cpp
+++ b/src/bias/Restraint.cpp
@@ -43,6 +43,8 @@ respectively.  The resulting potential is given by:
 The number of components for any vector of force constants must be equal to the number
 of arguments to the action.
 
+Additional material and examples can be also found in the tutorial \ref belfast-4 
+
 \par Examples
 The following input tells plumed to restrain the distance between atoms 3 and 5
 and the distance between atoms 2 and 4, at different equilibrium