1. Neuartige Kohlenstoffe
2. New Forms of Carbon
3. in: Ullmanns Encyklop�die der technischen Chemie, Vol. 14, Verlag Chemie, Weinheim 1977, pp. 595-651.
4. : Encyclopedia of Chemical Technology, Vol. 4, Wiley, New York 1978, pp. 556-666, 689-709.
5. 1982 Annual Book of ASTM Standards, Part 17, American Society for Testing and Materials, Philadelphia 1982.