1. Anon (1947) Specification for High Alumina Cement, BS915, British Standards Institution, London
2. Anon (1958) Specification for Ordinary Portland Cement, BS12, British Standards Institution, London
3. Anon (1972) Recommandations concenant la conception, la calcul, l'execution et le contrôle des tirants d'ancrage, Recommendations TA72, Bureau Securitas, Paris
4. Anon (1973) Specification for Portland Blast Furnace Cement, BS146, British Standards Institution, London
5. Anon (1974) Low Heat Portland Blast Furnace Cement, BS4246, British Standards Institution, London