Schechter, Martin. <br/><br/>
Operator methods in quantum mechanics /  
by Martin Schechter. 
 - New York :   Dover Publications, INC. ,   1981 
 - 324p ;  
<br/><br/><label>ISBN: </label>0-486-42547-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>CN1  / M1