Kauffman, R. M.  1941- <br/><br/>
The deficiency index problem for powers of ordinary differential expressions/ 
Robert M. Kauffman, Thomas T. Read, Antol Zettl. 
 - Berlin ;  New York:  Springer-Verlag,  1977. 
 - vi, 112 p. ;  25 cm. 
 - Lecture notes in mathematics ;  621. .
 - Lecture notes in mathematics (Springer-Verlag);  621. .
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [98]-110. 
<br/><br/><label>ISBN: </label>0387085238 
<br/><br/><label>LCCN: </label>77025921 //r952 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boundary value problems---Weyl theory<br/>Differential operators.
<br/><br/><label>Dewey Class. No.: </label>510/.8 s  515/.35