References

1. ACIDENTES NA CONSTRUCAO REGULACAO DE SINISTROS INSTITUTO DE ENGENHARIA - SP: 25.08.2009
2. N. Barton, A unique metro accident in Brazil, Nick Barton, May 2008
3. N. Barton and M. Abrieu, City metro tunnels and stations that should have been deeper
4. N. Barton, Cavern and Tunnel Collapses due to Adverse Structural Geology, January 2016
5. C.M. Nieble, L.G. de Mello and G.R. Sadowski, The accident at the Pinheiros underground station of line 4 of Sao Paulo's metropoIitan subway: A case of local geological conditions that led to an unforeseen geomechaniaal behaviour
6. J.M. Barros and A.P. Assis, An Independent view of the Pinheiros Station Accident(Sao Paulo Metro) and Lessons Learnt for Future ContractuaI Arrangements
7. JM Barros, W lyomasa and AA Azevedo, Z Eisenstein and AP Assis, Sao Paulo CoIIapse Report -Lessons from Brazil: Pinheiros examined, Tunnels and Tunnelling international, November 2008
8. IPT, Investigacao e AnaIise. do Colapso da Estacao Pinheiros da linha 4. Relatorio Tecnico Final No 99 642-205, Instituto de Pesquisas Tecnologicas do Estado de Sao Paulo, Sao Paulo, 384, 2008
9. Werner BILFINGER, Tunneling Through the Rock-Soil Interface, Technical Session #7 "Excavations and Tunnels". 2019
10. As causas do acidente da Estacao Pinheiros da Linha 4 do Metro, de Sao paulo, 2008