The dynamics of quasiregular maps of punctured space Daniel NicksDavid Sixsmith Indiana University Mathematics Journal 2019 text pdf 10.1512/iumj.2019.68.7556 10.1512/iumj.2019.68.7556 en Indiana Univ. Math. J. 68 (2019) 323 - 352 state-of-the-art mathematics http://iumj.org/access/