1. In Rubber Technology and Manufacture, 2nd ed.; ; Eds.; Butterworths: London, 1982; Chapter 4, Part C.
2. Encyclopedia;Stewart,1985
3. In Rubber Technology, 3rd ed.; Ed.; Van Nostrand Reinhold: New York, 1987; Chapter 12.
4. In Rubbery Materials and Their Compounds; Elsevier Applied Science: New York, 1988; Chapter 10.