Markus, N. S., & Otte, J. (1952). Data and circuits of radio receiver and amplifier valves: Valves developed during the period 1945/50. Eindhoven: Philips Technical Library.
Παραπομπή Chicago StyleMarkus, N. S., and J. Otte. Data and Circuits of Radio Receiver and Amplifier Valves: Valves Developed During the Period 1945/50. Eindhoven: Philips Technical Library, 1952.
Παραπομπή MLAMarkus, N. S., and J. Otte. Data and Circuits of Radio Receiver and Amplifier Valves: Valves Developed During the Period 1945/50. Eindhoven: Philips Technical Library, 1952.
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