Allen, D.N. de G.. <br/><br/>
Relaxation Methods in Engineering and Science /  

 - 1st ed /  
 - New York :   McGraw-Hill Book Company Inc.. 
 - p.257 :  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B23  / J4;1