1. The Science and Technology Team of Darwin and Alcatel Study Team, "Darwin. The Infrared Space Interferometer. Concept and Feasibility Study Report," European Space Agency, ESA-SCI(2000)12, 2000, pp. iii+218.
2. TPF Science Working Group, "The Terrestrial Planet Finder (TPF): A NASA Origins Program to Search for Habitable Planets," Jet Propulsion Lab. Publ. 99-003 [online database], http://planetquest.jpl.nasa.gov/ TPF/tpf_book/index.cfm [retrieved May 1999].
3. Searching for life with the Terrestrial Planet Finder: Lagrange point options for a formation flying interferometer
4. LIBRATION POINT MISSIONS, 1978 – 2002
5. Canalias, E., Gómez, G., Marcote, M., and Masdemont, J. J. "Assessment of Mission Design Including Utilization of Libration Points and Weak Stability Boundaries. Final Report," ESA-ESTEC Ariadna Study [online database], http://www.esa.int/gsp/ACT/doc/ ARI/ [retrieved 2007].