1. Alexander, L.G. and Hosking, A.D. (1971) Principles of rock bolting formation of a support medium,Symposium on Rock Bolting, February, The Australasian Institute of Mining and Metallurgy, Illawarra Branch, Paper No. 1, 21 pp.
2. American Society for Testing and Materials (1976)Standard Specifications for Roof and Rock Bolts and Accessories, ASTM Standard No. F 432-76a, 14 pp.
3. Anderson, R.B. (1974) Use of resin-anchored roof bolts in adverse conditions,Mining Congress Journal, January, pp. 37?40.
4. Atlas Copco (1982) Rock Reinforcement System, Swellex.
5. Babcock, C.O. (1980) A plastic-elastic helical rock bolt,Proceedings of the 21st US Symposium on Rock Mechanics, University of Missouri-Rolla, Missouri, pp. 769?79.