Projective Manifolds Containing Many Rational Curves Antonio LanteriMarino Palleschi Indiana University Mathematics Journal 1987 text pdf 10.1512/iumj.1987.36.36047 10.1512/iumj.1987.36.36047 en Indiana Univ. Math. J. 36 (1987) 857 - 865 state-of-the-art mathematics http://iumj.org/access/