1. Sakao, M., Kasai, N., Ishijima, T., Ikawa, E., Watanabe, H., Terada, K. and Kikkawa, T. IEDM Tech. Dig., 1990, p. 655
2. Yoshimaru, M., Miyano, J., Inoue, N., Sakamoto, A., You, S., Tamura, H. and Ino, M., IEDM Tech. Dig., 1990, p. 659
3. Fazan, P. C. and Ditali, A., IEDM Tech. Dig., 1990, p. 663
4. New model for a capacitance increase of a capacitor with hemispherical grains