(1) H. Makishima, H. Inuma, M. Takahashi, H. Fukui, and A. Okano : “Remarkable improvements of microwave electron tubes through the development of the cathode materials”, Proc. 10th. International Vacuum Microelectronics Conference (IVMC’97), pp. 194-199, Kyongju, Korea (1997)
(2) R. H. Fowler and L. Nordheim : “Electron Emission in Intense Electric Fields”, Proc. Roy. Soc. London, Vol. A119, pp. 173-181 (1928)
(3) A. G. J. van Oostrom : “Validity of the Fowler-Nordheim model for field electron emission”, Philips Research Reports, Supplements No. 1, pp. 1-100 (1966)
(4) T. Kawakubo, Y. Saito, N. Miyamoto, H. Nakane, and H. Adachi : “Fabrication of thermal field emitter by using yttrium oxide”, Proc. Int. Display Workshop 2003 (IDW’03), pp. 1219-1222, Fukuoka, Japan (2003)
(5) Y. Saito, K. Yada, and H. Adachi : “Electron Emission characteristics of Thermal Field Emitter using Erbium and Lutetium”, Proc. Int. Display Workshop 2001 (IDW’01), pp. 1257-1260, Nagoya, Japan (2001)
