Asymptotic Behavior of Solutions to the Three-Dimensional Navier-Stokes Equations Maria Schonbek Indiana University Mathematics Journal 1992 text pdf 10.1512/iumj.1992.41.41042 10.1512/iumj.1992.41.41042 en Indiana Univ. Math. J. 41 (1992) 809 - 823 state-of-the-art mathematics http://iumj.org/access/