1. S. Furukawa.,: Proc. of 1st ICACSC, Springer Proc. in Phys. 34, p. 58(1989).
2. K. Sasaki, T. Fukazawa and S. Furukawa.,: Tech. Dig. of IEDM87, p. 186 (1987).
3. M. Ugajin, M. Kuwagaki, and S. Konaka.,: Ext. Abs. 23rd Int. Conf. SSDM, p. 159 (1991).
4. M. Kondo, T. Saitoh, M. Tamura, S. Matsubara and M. Miyao.,: Jpn. J. Appl. Phys., 28[9], p. 1531 (1989).
5. J. Symons, J. Nijs, and R. Mertens.,: IEEE Trans, on Elec. Dev., ED-36[12], p.2889(1989).