1. The VIRGO Project: A wide band antenna for gravitational wave detection
2. The VIRGO project — proposal for the construction of a large interferometric detector of gravitational waves;Bradaschia,1989
3. LIGO: The Laser Interferometer Gravitational-Wave Observatory
4. A laser interferometer gravitational-wave observatory (LIGO), proposal to the NSF;Vogt,1989
5. Proposal for a 600 m laser interferometric gravitational antenna — GEO 600, proposal to the PPARC;Hough,1994