Encyclopaedia of Mathematical Sciences <br/><br/>
Dynamical systems  Pt.6 - Singularity theory 1 
Ed. by V. I. Arnold 
 - Berlin  Springer-Verlag  1993 
 - 245p. 
 - Encyclopaedia of Mathematical Sciences   V. 6 .
<br/><br/>  
<br/><br/><label>Dewey Class. No.: </label>510.3  / En56.6