Motion of Solids in Viscous and Electrically Conducting Fluids R. Kanwal Indiana University Mathematics Journal 1970 text pdf 10.1512/iumj.1970.19.19046 10.1512/iumj.1970.19.19046 en Indiana Univ. Math. J. 19 (1970) 489 - 513 state-of-the-art mathematics http://iumj.org/access/