diff --git a/source/trunk/Model/Irradiation/IM_Matrix.hxx b/source/trunk/Model/Irradiation/IM_Matrix.hxx
index 2a99f6e85dedafa8e3964ff25f296597b099992c..74207ef7477b7a2197fec3700091e6cc619af021 100644
--- a/source/trunk/Model/Irradiation/IM_Matrix.hxx
+++ b/source/trunk/Model/Irradiation/IM_Matrix.hxx
@@ -19,6 +19,8 @@ using namespace std;
 class CLASSLogger;
 
 //-----------------------------------------------------------------------------//
+//! Define en IrradiationModel based on power series of the exponential of the Bateman matrix
+
 /*!
  Define a IM_Matrix.
  The aim of these class is to solve numericaly the Bateman equations using the
diff --git a/source/trunk/Model/Irradiation/IM_RK4.hxx b/source/trunk/Model/Irradiation/IM_RK4.hxx
index 18fbfc3b7f9483b7e224b0f0870d933e2a5391c7..e9d300259c8dc06dcfd27f4e186200b1cc043472 100644
--- a/source/trunk/Model/Irradiation/IM_RK4.hxx
+++ b/source/trunk/Model/Irradiation/IM_RK4.hxx
@@ -20,9 +20,8 @@ using namespace std;
 class CLASSLogger;
 
 //-----------------------------------------------------------------------------//
+//! Define en IrradiationModel based on Runge Kutta 4th order
 /*!
- Define a IM_RK4
- 
  The aim of these class is to solve numericaly the Bateman equations using 
  Runge Kutta 4th order method
  
diff --git a/source/trunk/Model/XS/XSM_CLOSEST.hxx b/source/trunk/Model/XS/XSM_CLOSEST.hxx
index 65d1204657160bce7e917f09695fc00bc99fdfcb..a41cbf1bfc2a353232c95d23674662d0fc47cfe4 100644
--- a/source/trunk/Model/XS/XSM_CLOSEST.hxx
+++ b/source/trunk/Model/XS/XSM_CLOSEST.hxx
@@ -21,6 +21,8 @@ typedef long long int cSecond;
 using namespace std;
 
 //-----------------------------------------------------------------------------//
+//! Define a XSModel getting mean cross sections from the closest EvolutionData 
+
 /*!
  Define a XSM_CLOSEST.
  Class to get cross sections from a set of pre-calculation
diff --git a/source/trunk/Model/XS/XSM_MLP.hxx b/source/trunk/Model/XS/XSM_MLP.hxx
index 03317a99ad8d31d4efe19a622f9488752185a393..529b8af9217f4ccd50a53d9edd9aecd7e9567f97 100644
--- a/source/trunk/Model/XS/XSM_MLP.hxx
+++ b/source/trunk/Model/XS/XSM_MLP.hxx
@@ -22,6 +22,8 @@ typedef long long int cSecond;
 using namespace std;
 
 //-----------------------------------------------------------------------------//
+//! Define a XSModel getting mean cross sections from neural network execution
+
 /*!
  Define a XSM_MLP.
  This is the class to predict cross sections with a