1. Radio and Electronic Components, Vol. I, Fixed Resistors;DUMMER,1956
2. Modern Electronic Components;DUMMER,1959
3. Fixed resistors for use in communications equipment;COURSEY;Proc. Instn. Elect. Engrs.,1949
4. Electronic Components Handbook;HENNEY,1957
5. Resistor ratings characteristics and operating conditions;SPRATT;Wireless World,1948