1. The Rheology of Fresh Concrete;Tattersall,1983
2. Workability and Quality Control of Concrete;Tattersall,1991
3. Relationships between the British Standard tests for workability and the two-point test
4. BS1881 Testing Concrete: Part 102, Method for the determination of slump, British Standards Institution, 1983.
5. ASTM C 143–90, Standard test method for slump of hydraulic cement concrete, American Society for Testing and Materials, 1990.