On a Paper of Ramesh Gangolli M. Nadkarni Indiana University Mathematics Journal 1968 text pdf 10.1512/iumj.1968.17.17021 10.1512/iumj.1968.17.17021 en Indiana Univ. Math. J. 17 (1968) 403 - 405 state-of-the-art mathematics http://iumj.org/access/