1. M. Coles, “Sources and detectors,” Proc. Int. Conf. on Gravitational Waves, I. Cuifolini and F. Fedecaro (eds.), World Scientific, Singapore (1997), p. 74.
2. A. Giazotto, ibid., p. 166.
3. K. Danzmann, ibid., p. 256.
4. S. Kawamura and N. Mio, Proc. 2nd TAMA Intern. Workshop on Gravitational Wave Detection, Univ. Academ., Tokyo (1999).
5. http://www.anu.edu.au/ACIGA