diff --git a/README.md b/README.md
index ff4ad91e4a04ffb4bbf1ca3621fc0131f748cc37..fa2fd96b505b161e52723114d283c09764d10015 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,19 @@
 # VeikonKone GEANT4 Simulation
 
-Veikon Kone is the name of a magnetic spectrometer for high-energy electrons originally designed and built in the 1980s at the University of Jyväskylä in Finland. 
-It consists of a Siegbahn-Slätis magnet combined with an energy-dispersive detector.
-The spectrometer is currently being refurbished with a view to study the beta decay of the unstable isotope ^20 F.
+Veikon Kone is the name of an electron spectrometer designed and 
+built in the 1980s at the University of Jyväskylä in Finland. It 
+consists of a Siegbahn-Slätis type intermediate-image magnetic 
+electron transporter with an energy-dispersive beta detector 
+at the focal plane. In 2017/18 it was fully refurbished and used 
+at the IGISOL-4 facility at the JYFL Accelerator Laboratory 
+to measure the second-forbidden, non-unique, ground-state transition 
+in the beta decay of ^20 F.
 
-This repository contains a GEANT4 simulation program of the spectrometer.
-See the [project wiki](https://git.kern.phys.au.dk/oliskir/VeikonKone/wikis/home) for instructions on how to obtain, install and run the program.
+This repository contains the GEANT4 simulation of the refurbished spectrometer. See the [project wiki](https://git.kern.phys.au.dk/oliskir/VeikonKone/wikis/home) for instructions on how to obtain, install and run the program.
 
-Any inquires concerning the contents of this repository should be directed to oliver.kirsebom+phys@gmail.com.
\ No newline at end of file
+Inquires should be directed to oliver.kirsebom+phys@gmail.com.
+
+The implementation of the tracking in the magnetic field is 
+based on the [purging_magnet](https://twiki.cern.ch/twiki/bin/view/Geant4/AdvancedExamplesPurgingMagnet) example, while the implementation 
+of the generation, transport and collection of scintillation 
+photons is based on the [LXe](http://geant4-userdoc.web.cern.ch/geant4-userdoc/Doxygen/examples_doc/html/ExampleLXe.html) example.
diff --git a/src/VKTabulatedField3D.cpp b/src/VKTabulatedField3D.cpp
index 7916f9775b60e12db9ffd0bf8b58a92bdb98c15e..91000e31becdfb8fa0d88089184cd1ee2ec506a6 100644
--- a/src/VKTabulatedField3D.cpp
+++ b/src/VKTabulatedField3D.cpp
@@ -1,3 +1,39 @@
+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+// Code developed by:
+//  S.Larsson and J. Generowicz.
+//
+//    *************************************
+//    *                                   *
+//    *    PurgMagTabulatedField3D.cc     *
+//    *                                   *
+//    *************************************
+//
+// $Id: PurgMagTabulatedField3D.cc 84477 2014-10-16 08:44:04Z gcosmo $
+//
 
 #include "VKTabulatedField3D.hh"
 #include "G4SystemOfUnits.hh"