1. Magison, E. C., “Low-Voltage Ignition of Hazardous Atmospheres,” ISA Journal, July 1962.
2. Litchfield, E. L., “Minimum Ignition-Energy Concept and its Application to Safety Engineering,” Bureau of Mines, RI 5671.
3. Vaillard, R., “Données relatives à l’inflamationdes mélanges gazeux combustibles par l’étincelle électrique,” Journal de Chimie Physique 40 (1943), pp. 101–108.
4. Morgan, J.D., “Principles of Ignition,” Sir Isaac Pitman and Sons Ltd., London, 1942, p. 15.
5. Gehm, K.H., “Sonderschutzarten für den Explosions schütz von elektrischen Betriebsmitteln,” Elektro Welt, 1959, Nr. 10.