US3926679-A  Kirk-Othmer, Encyclopedia of Chemical Technology, Second Edition, Vol. 19, pp. 531-535.
DE2520961-A  Garten, W.: Bleiakkumulatoren, 1968, S. 19 u. 26;  Witte, E.: Blei- und Stahlakkumulatoren, 1969, S. 112
US3875270-A  Kaufman M., Advances In PVC Compounding And Processing, Maclaven & Sons Ltd., London, 1962, p. 57.
FR2309045-A  NEANTUS4044193-A  Foundations of College Chemistry, Murphy and Rousseau, pp. 648-649, 1969.US33149-E  Adlhart et al., "Noble Metal-Carrier Catalysts", Proceedings 20th Annual Power Sources Conference, pp. 12-14, May 1966.;  Benesi et al., "Preparation of Highly Dispersed Catalytic Metals-Platinum Supported on Silicon Gel", Journal of Catalysis, 10, pp. 328-335 (1968).;  Bond, "The reaction of Ethylene with Deuterium Over Various Types of Platinum Catalyst" pp. 1235-1244 (1956). Frick Chemical Laboratory, Princeton University, Princeton, N.J.;  Foundations of College Chemistry, Murphy and Rousseau, pp. 648-649 (1969).
US3915747-A  Cathro, K. S., Fuel control in Methanol-Air and Formaldehyde-Air Fuel Cell Systems in J. Electrochem. Soc. 9/1971 Vol. 118 No. 9 pp. 1523-1529.
US3910814-A  Casey, J. P., "Pulp & Paper Making," Interscience Publishers, Second Edition, Vol. II, pp. 768, 813-815.
US3941135-A  Drake et al., "Transactions of the American Society for Artificial Internal Organs", Vol. XVI, 1970, pp. 199-205.;  Schaldactt et al. "Transactions of the American Society for Artificial Internal Organs", Vol. XVI, 1970, pp.184-192.