VERMA, P.; GAUTAM, S.; PAL, S.; KUMAR, P.; CHATURVEDI, P.; RAWAT, J.; CHAUDHARY, P.; HARSH, D.; BASU, P.; BHATANAGAR, P. Carbon Nanotube-based Cold Cathode for High Power MicrowaveVacuum Electronic Devices: A Potential Field Emitter. Defence Science Journal, v. 58, n. 5, p. 650-654, 1 set. 2008.