Petters,Arlie O. <br/><br/>
Singularity theory and gravitational lensing. 
Arlie.O.Petters ,Harold Levine and Joachim Wambsganss 
 - Boston  Birkhauser  c2001 
 - xxiv,603p.:ill.;28cm. -. 
 - Progress in mathematical physics;no.21 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitational lenses-mathematics<br/>Singularities (mathematics)
<br/><br/><label>Dewey Class. No.: </label>522.6  / PET