A Classification for Polynomial Lagrangians Jill Mesirov Indiana University Mathematics Journal 1979 text pdf 10.1512/iumj.1979.28.28007 10.1512/iumj.1979.28.28007 en Indiana Univ. Math. J. 28 (1979) 99 - 117 state-of-the-art mathematics http://iumj.org/access/