1. LIGO: The Laser Interferometer Gravitational-Wave Observatory
2. K. Danzmann et al., GEO 600: Proposal for a 600 m laser interferometric gravitational wave antenna, Max-Planck-Institut für Quantenoptik Report 190, Garching Germany, 1994.
3. K. Tsubono, in: Gravitational Wave Experiments, in: Proc. First Edoardo Amaldi Conference, vol. 112, World Scientific, 1995.