1. Shaw K (1972) Refractories and their uses. Applied Science Publishers, London
2. Chesters JH (1973) Refractories: production and properties. Iron and steel institute, London
3. Chesters JH (1974) Steel plant refractories. Iron and Steel Institute, London
4. Kingrey WD, Bown H, Uhlamann DR (1976) Introduction to ceramics, 2nd edn. Jhon Wiley and Sons, New York
5. Grim RE (1962) Applied clay mineralogy. Mc Graw- Hill Book Co. Inc., New York