1. Differential-Difference Equations;Bellman,1963
2. A. Bensoussan, M. C. Delfour, and S. K. Mitter, The linear dimensional systems over an infinite horizon; survey and examples, in “Proceedings of the 1976 IEEE Conference on Decision and Control,” pp. 746–751.
3. Stability of functional differential equations of neutral type;Cruz;J. Differential Equations,1970
4. Uniform asymptotic stability of evolutionary processes in a Banach space;Datko;SIAM J. Math. Anal.,1973
5. Stability of linear functional equations on Banach space;Dickerson;J. Math. Anal. Appl.,1976