"8. Potential new lines". London and South East Route Utilisation Strategy. Network Rail. 28 July 2011. pp. 149–153. Archived from the original on 14 March 2012.
"8. Potential new lines". London and South East Route Utilisation Strategy. Network Rail. 28 July 2011. pp. 149–153. Archived from the original on 14 March 2012.