1. ASTM. ASTM test C 232 Method for Bleeding of Concrete. ASTM, Conshohocken, Pennsylvania, USA.
2. Mathematical Exercises (Part 2) (1724);Bernoulli;Hydrodynamica,1738
3. BS 1881: Part 102. Testing concrete: Method for determination of slump. British Standards Institution, London.
4. BS 1881: Part 103 (now withdrawn) testing concrete: Method for determination of compacting factor. British Standards Institution, London.
5. BS 1881: Part 104 Testing concrete: Method for detemination of Vebe time. British Standards Institution, London.