Arnold, David M.. <br/><br/>
Lecture Notes in Mathematics: Finite Rank Torsion Free Abelian Groups and Rings /  

 - 1st ed /  
 - Berlin 33 :   Springer-Verlag ,   1980 
 - p.191 :  
<br/><br/><label>ISBN: </label>3-540-11557-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rings
<br/><br/><label>Dewey Class. No.: </label>B271  / M2A