Katsumata R., Kito M., Fukuzumi Y., Kido M., Naka H. T., Komori Y., Ishiduki M., Matsunami
J., Fujiwara T., Nagata Y., Zhang L., Iwata Y., Kirisawa R., Aochi H., Nitayama A.,
Jun 2009, Pipe-shaped BiCS flash memory with 16 stacked layers and multi-level-cell
operation for ultra high density storage devices, Symp. VLSI Technol. Dig., pp. 136-137