1. ‘General Considerations in Assessing the Advantages of Using Underground Space’, Tunnelling and Underground Space Technology, Vol. 10, No. 3, 1995
2. ‘Underground Car Parks: International Case Studies’, Tunnelling and Underground Space Technology, Vol. 10, No. 3, 1995
3. Allport, R.J., Bamford T.J.B., 1998. ‘Realizing the Potential of MRT Systems in Developing Cities,’ Proceedings of the 8th World Conference on Transport Research, Antwerp, July 1998
4. Bayliss, D. ‘The growing demand for urban mobility’ – 51st Congress of International Union of Public Transport
5. Bobrick, B., 1981. Labyrinths of Iron, William Morrow and Company, Inc., New York