1. Ford W. Method of making cellular refractory thermal insulating material. US patent 3121050, 1964.
2. Bonzom A, Crepaux AP, Montard A-MEJ. Process for preparing pitch foams and products so produced, US Patent 4276246, 1981.
3. Klett J. Pitch-based carbon foam and composites. US patent 6261485, 2001.
4. Evolution of the structure and mechanical behaviour of a carbon foam at very high temperature;Bruneton;Carbon,2002
5. The preparation of new materials through carbonization between montmorillonite lamellae;Li;Materials Review, China,1997