Generic Uniqueness for Hypersurfaces Minimizing the Integral of an Elliptic Integrand with Constant Coefficients Frank Morgan Indiana University Mathematics Journal 1981 text pdf 10.1512/iumj.1981.30.30003 10.1512/iumj.1981.30.30003 en Indiana Univ. Math. J. 30 (1981) 29 - 45 state-of-the-art mathematics http://iumj.org/access/