1. Purdy RC, Moore JK (1907) Pyro-chemical and physical properties of clays. Trans Am Ceram Soc 9:204–318
2. Hall C, Hoff WD and Prout W (1992) Sorptivity–porosity relations in clay brick ceramic. Am Ceram Soc Bull 71:1112–1116
3. Hall C (1996) Clay brick. In: Jackson N, Dhir RK (Eds) Civil engineering materials, 5th edn. Palgrave, Basingstoke
4. Hall C, Hoff WD (2012) Water transport in brick, stone and concrete, 2nd edn. Taylor and Francis, London
5. BS EN 1936:2006 Natural stone test methods determination of real density and apparent density, and of total and open porosity