KAUFFMAN, Robert M. Zettl, Anton Read,Thomas T. <br/><br/>
The deficiency index problem for powers of ordinary differential expressions 
[by] Robert M.Kauffman, Thomas T.Read, Anton Zettl 
 - Berlin  Springer-Verlag  1975 
 - vi, 112 p.- 
 - Lecture notes in mathematics; no 621 .
<br/><br/>  	Includes index. 
<br/><br/><label>ISBN: </label>3540085238 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ordinary differential equations<br/>Differential calculus
<br/><br/><label>Dewey Class. No.: </label>515.352  / KAU