ACI Committee 506.
Gebler
Thomas Berger
Christof Gipperich
Georges Siaken Ngamani
Tom Cooke
American Concrete Institute. Committee 506
D. R. Morgan
Unknown Author
Timothy Francis Ryan
Engineering Foundation Conference: Shotcrete for Ground Support Easton, Md. 1976
Richard Linder
O. W. Blümel
Reinhold Hahlhege
International Conference on Engineering Developments in Shotcrete (2001 Hobart, Tas.)
Concrete Society.
Engineering Foundation Conference: Shotcrete for Ground Support (1976 Easton, Md.)
Symposium on Sprayed Concrete (1980 London, England)
John C. Sharp
T.H Cooke