1. deLaubenfels, R.,Existence Families, Functional Calculi and Evolution Equations, LNM, Vol. 1570. New York: Springer-Verlag, 1994, 7–73.
2. Reed, M., Simon, B.,Methods of Modern Mathematical Physics II, New York: Academic Press, 1975.
3. deLaubenfels, R., Entire solutions of the abstract Cauchy problem,Semigroup Forum, 1991, 42: 83.
4. delaubenfels, R., Sun, G., Wang, S., Regularized semigroups, existence families and the abstract Cauchy problem,J.Diff. Integ. Equat., 1995, 8(6): 1477.
5. Autret, L., Entire vectors and time reversible Cauchy problems,Semigroup Forum, 1993, 46: 347.