1. Carranza-Torres C. Some comments on the application of the Hoek–Brown failure criterion for intact rock and rock masses to the solution of tunnel and slope problems. In: Barla G, Barla M, editors, MIR 2004 – X Conference on rock and engineering mechanics, Torino, Italy, Pàtron Editore, Bologna; 24–25 November 2004. p. 285–326. [Chapter 10].
2. Underground excavations in rock;Hoek,1980
3. Brown ET. Estimating the mechanical properties of rock masses. In: Proceedings of the 1st southern hemisphere international rock mechanics symposium: SHIRMS 2008, Perth, Western Australia, vol. 1; 2008. p. 3–21.
4. Hoek E, Carranza-Torres C, Corkum B. Hoek–Brown failure criterion-2002 edition. In: Proceedings of the North American rock mechanics society meeting, Toronto; July 2002.
5. Genetic programming: on the programming of computers by means of natural selection;Koza,1992