1. Paper 12, Sixth International Reinforced Plastics Conference;Davis,1968
2. Unpublished work at the Explosives Research and Development Establishment.
3. Fiberfil Division, Rexall Chemical Co, Data sheet No 127-2169.
4. Tensile Strength of Asbestos
5. Paper 2-8, Conference on the Physics and Chemistry of Asbestos Minerals;Busman,1967