Varchenko, A.N & Etingof, P.I <br/><br/>
Why the boundary of a round drop becomes a curve of order four 
A.N. Varchenko & P.I. Etingof 
 - Providence  American Mathematical Society  1992 
 - viii  72 
 - University lecture series 3 .
<br/><br/><label>ISBN: </label>9780821870020 
<br/><br/><label>Dewey Class. No.: </label>4.08  / VARC