Zorpette, G. New life for Nixies [in digital clocks]. IEEE spectrum.
Cita Chicago (17th ed.)Zorpette, G. "New Life for Nixies [in Digital Clocks]." IEEE Spectrum .
Cita MLA (9th ed.)Zorpette, G. "New Life for Nixies [in Digital Clocks]." IEEE Spectrum, .
Atenció: Aquestes cites poden no estar 100% correctes.