Spiegel, Murray R. <br/><br/>
Vector Analysis : 
and An Introduction to Tensor Analysis 
 - New York  Schaum Publishing Company  1959 
 - 225 
<br/><br/><label>Publisher. No.: </label> Geetha 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics