Rigidity of almost-isometric universal covers Aditi KarJean-Francois LafontBenjamin Schmidt Indiana University Mathematics Journal 2016 text pdf 10.1512/iumj.2016.65.5781 10.1512/iumj.2016.65.5781 en Indiana Univ. Math. J. 65 (2016) 585 - 613 state-of-the-art mathematics http://iumj.org/access/