@inproceedings{CTT100634600, author = {Shinpei Hijiya and Takashi Ito and Tetsuo Nakamura and Nobuo Toyokura and Hajime Ishikawa}, title = {Electrically Alterable Read Only Memory Cell with Graded Energy Band-Gap Insulator}, booktitle = {Tech. Dig. of IEDM}, year = 1980, }