Rainey, T.P.; Rosenbaum, M.S. The adverse influence of geology and groundwater on the behaviour of London Underground railway tunnels near Old Street station. Proceedings of the Geologists' Association. 1989, 100 (100): 123–134. ISSN 0016-7878. doi:10.1016/S0016-7878(89)80071-9.
Burgess, N; Fagents, J; Paterson, J. Northern Line tunnel reconstruction at Old Street. Proceedings of the Institution of Civil Engineers - Transport (Proceedings of the ICE - Transport). 1 February 2002, 153 (1): 1–11. ISSN 0965-092X. doi:10.1680/tran.2002.153.1.1.
Rainey, T.P.; Rosenbaum, M.S. The adverse influence of geology and groundwater on the behaviour of London Underground railway tunnels near Old Street station. Proceedings of the Geologists' Association. 1989, 100 (100): 123–134. ISSN 0016-7878. doi:10.1016/S0016-7878(89)80071-9.
Burgess, N; Fagents, J; Paterson, J. Northern Line tunnel reconstruction at Old Street. Proceedings of the Institution of Civil Engineers - Transport (Proceedings of the ICE - Transport). 1 February 2002, 153 (1): 1–11. ISSN 0965-092X. doi:10.1680/tran.2002.153.1.1.