D. Hadfield, Permanent Magnets and Magnetism, Iliffe Books Ltd., London, 1962, pp. 314-315, month of publication not available. |
F.A. Lowenheim, Electroplating, McGraw-Hill Book Co., New York, 1978 month of publication not available, pp. 16-19. |
Eric M. Rogers, "Physics for the Inquiring Mind", Princeton University Press, twelfth printing,1977 month of publication not available, pp. 535, 580. |
Dr. Charles Wallach, "The Ion Controversy", Belle Lumiere Pty Limited (Australian Edition), 1983 month of publication not available, pp. 28-29, 40-41. |