1. 1) M. Hiraoka, Haikibutsu Handbook, Ohmsha, Tokyo, Japan, p. 975 (1997).
2. 2) Ministry of Environment of Japan, Kankyo Hakusyo, Nikkei Insatsu, Tokyo, Japan, p. 262 (2010).
3. 3) M. Hiraoka, Nippon Kagaku Kaishi, 5, 559 (1991).
4. 4) H. Tachikawa, N. Yoshimoto, and T. Kodama, J. Jpn. Assoc. Odor Environ., 36, 331 (2005).
5. 5) Y. Yukio and T. Otsuka, Japan Patent, P2002-187858A.