Dold A. <br/><br/>
Lecture Notes in Mathematics 970    : Twistor Geometry and Non- Linear Systems  
/ by A.Dold, B. Eckmann  
 - New York:   Springer Verlag;   1982.  
 - 216p. 
<br/><br/><label>ISBN: </label>3540119728  
<br/><br/><label>Dewey Class. No.: </label>516.3  / DOL/L