"Synthesis and Unuasual Spectral Properties of (Alkoxycarbonyl)methyl-Substituted Polysilanes" (Yasuo Hatanaka, Shingo Okada, Shun-ya Onozawa, Masato Tanaka, and Yohichi Suzuki). Chem. Lett. . 2001. 600-601
"Unusual Locking of Silicon Chains into All-Transoid Conformation by Pentacoordinate Silicon Atoms. " (I. El-Sayed, Y. Hatanaka, S. Onozawa, and M. Tanaka). J. Am. Chem. Soc. J. Am. Chem. Soc.. 2001. 123, 3597-3598
"Theoretical Studies of Ultraviolet Absorption Spectra of Tetra-and Pentacoordinate Silicon Compounds. " (C. Muguruma, N. Koga, Y. Hatanaka, I. El-Sayed, M. Mikami and M. Tanaka). J. Phys. Chem. A. . 2000. 104, 4928-4935
"Synthesis, X-ray Structure and Electronic Properties of Oligosilanes Containing Pentacoordinate Silicon Moieties at Internal Positions. " (I. El-Sayed, Y. Hatanaka, C. Mugurama, S. Shimada, M. Tanaka, N. Koga and M. Mikamai). J. Am. Chem. Soc. . 1999. 121, 5095-5096