Holomorphic sections of a vector bundle and its conormal bundle over the circle Nicolas Eisen Indiana University Mathematics Journal 1996 text pdf 10.1512/iumj.1996.45.1009 10.1512/iumj.1996.45.1009 en Indiana Univ. Math. J. 45 (1996) 773 - 796 state-of-the-art mathematics http://iumj.org/access/