Kauffman, Robert McKenzie  (1941- ). <br/><br/>
The deficiency index problem for powers of ordinary differential expressions / 
Robert M. Kauffman, Thomas T. Read, Anton Zettl. 
 - Berlin [etc.] :  Springer-Verlag,  1977. 
 - VI, 112 s. ;  24 cm. 
 - Lecture Notes in Mathematics,  621  0075-8434 ; .
 - Lecture Notes in Mathematics  621 .
<br/><br/>Bibliogr. s. 98-110. Indeks. 
<br/><br/>
<br/><br/><label>ISBN: </label>3540085238 0387085238 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operatory różniczkowe.<br/>Zagadnienia brzegowe (matematyka).<br/>Problem Weyl'a.
<br/><br/><label>Universal Decimal Class. No.: </label>517.43