Evolution Equations Non-Linear in the Time Derivative Walter Strauss Indiana University Mathematics Journal 1966 text pdf 10.1512/iumj.1966.15.15003 10.1512/iumj.1966.15.15003 en Indiana Univ. Math. J. 15 (1966) 49 - 82 state-of-the-art mathematics http://iumj.org/access/