2Jones B. Underpassing of angel underground by London ring main extension tunnel. International Journal of Geoengineering Case Histories, 2011, 2(2): 105-12.
3Keane M A, Kerslake J C. The London water ring main: an opti- mal water supply system. Water and Environment Journal, 1988, 2(3): 253-267.
4Dickens W J, Bensted I H. London water ring main. Proceedings Institution Civil Engineers, 1988, 84(3)= 445-474.
5Farrow J P, Claye P M, Warren R B. Design of the Thames wa- ter ring main. Water and Environmental Management Journal, 1996,10(1): 1-9.
6Went R P F, Ricketts A D, McDonald H. The Thames water ring main: mechanical and electrical installation. Water and Envi- ronmental Management Journal, 1996,10(1) : 10-16.
