TY  - BOOK
AU  - Petters, Arlie O.
AU  - Levine, Harold 
AU  - Wambsganss, Joachim
TI  - Singularity theory and gravitational lensing
SN  - 0817636684
U1  - 522.6 
PY  - 2001///
CY  - Boston
PB  - Birkhauser 
KW  - Gravitational Lenses -- Mathematics
KW  - Singularities (Mathematics)
N1  - Includes Bibliographical References And Indexes; Includes Index
ER  -