On an Itial Value Problem for Flow of a Viscous Icompressible Fluid in an Unbounded Region Tse-Sun Chow Indiana University Mathematics Journal 1956 text pdf 10.1512/iumj.1956.5.55009 10.1512/iumj.1956.5.55009 en Indiana Univ. Math. J. 5 (1956) 263 - 276 state-of-the-art mathematics http://iumj.org/access/