Conference on "Differential Equations", The Netherlands, August 26-31, 1979 <br/><br/>
Geometrical approaches to differential equations  ; proceedings of the fourth scheveningen conference / 

 - Berlin:  Springer-Verlag,  1980 
 - vii, 339p. 
 - Lecture notes in Mathematics  810 .
<br/><br/><label>Dewey Class. No.: </label>515.35  / C748.GA