1. Gravitational Lenses;Schneider,1992
2. Cosmological applications of gravitational lensing;Blandford;Ann. Rev. Astron. Astrophys.,1992
3. Singularity Theory and Gravitational Lensing;Petters,2001
4. Gravitational lensing from a space–time perspective;Perlick;Living Rev. Relativ.,2004
5. Gravitational Lensing: Strong, Weak and Micro;Schneider,2006