TY - BOOK AU - Mellier, Yannick, ed. AU - Meylan, Georges, ed. ED - Symposium of the International Astronomical Union TI - Impact of gravitational lensing on cosmology: proceedings of IAU symposium 225th held at Ecole Polytechnique Federale De Lausanne, Switzerland, 19-23 july 2004 T2 - IAU symposium; no. 225 SN - 0-521-85196-3 PY - 2005/// CY - Cambridge PB - Cambridge University Press KW - Cosmology KW - Gravitational lenses KW - Quasars ER -