WRIGHT, JOSEPH EDMUND <br/><br/>
INVARIANTS OF QUADRATIC DIFFERENTIAL FORMS 

 -  DOVER PUBLICATIONS, NEW YORK  2013 
 - 90 
<br/><br/><label>ISBN: </label>9780486497686 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label> / WRI