Asymptotic Behavior of C_0-Semigroups in B-Convex Spaces Volker Wrobel Indiana University Mathematics Journal 1989 text pdf 10.1512/iumj.1989.38.38004 10.1512/iumj.1989.38.38004 en Indiana Univ. Math. J. 38 (1989) 101 - 114 state-of-the-art mathematics http://iumj.org/access/