Sharma, J L. <br/><br/>
Dictionary of science  

 - 2nd edition. 
 - New Delhi :  C B S Publisher,  2007 
 - 507. 
<br/><br/><label>ISBN: </label>8123902921 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Natural sciences mathematics
<br/><br/><label>Dewey Class. No.: </label>500.3  / SHA