1. Yoggy GD. The History of Shotcrete – Part 1. Shotcrete Magazine. 2000;Fall 2000: 28–9.
2. Yoggy GD. The History of Shotcrete – Part 2. Shotcrete Magazine. 2001;Spring 2001: 22–3.
3. Yoggy GD. The History of Shotcrete – Part 3. Shotcrete Magazine. 2001;Spring 2002: 20–3.
4. Design guidelines for the use of fiber-reinforced shotcrete in ground support;Papworth;Shotcrete Mag,2002
5. Shotcrete support design in blocky ground: towards a deterministic approach;Barrett;Tunn Undergr Space Technol,1995