1. (1) J. Toyoda, K. Nara, J. Hasegawa, T. Torizuka, H. Suzuki, I. Iyoda, T. Oyama, and H. Asano:“Recent Aspects on Electric Power System Technologies”, J. IEE Japan, Vol.117, No.6 (1997-6) (in Japanese)
?????????????????????? ????????? ??????:???:?????????????, ???, 117, 6 (1977-6)
2. (3) L. R. Brown: Eco-Economy, p.340 (2001) (in Japanese)
????????:????????, p.340, ????? (2002)
3. (4) F. Capra and G. Pauli: Steering Business Toward Sustain-ability, p.181 (1995) (in Japanese)
?????????????????:?????????,???????????????, p.181, ??????? (1996)