Singularities of the Reflected Riemann Matrix A. Deakin Indiana University Mathematics Journal 1968 text pdf 10.1512/iumj.1968.17.17015 10.1512/iumj.1968.17.17015 en Indiana Univ. Math. J. 17 (1968) 279 - 298 state-of-the-art mathematics http://iumj.org/access/