00355nam a2200121Ia 4500082001100000100003900011245006900050260005200119300001100171500001600182500000500198700003000203  aCD29b  aVarchenko, A. N. and Etingof, P.I.  aWhy the boundary of a round drop becomes a curve of order fourb  aProvidencebAmerican Mathematical Societyc1969  aOne CD  aAMS Webpage  a  aEtingof, P. I. ; jt.auth.