1. Optimal Control of Distributed Parameter Systems;Ahmed,1980
2. A penalty function proof of a Lagrange multiplier theorem with application to linear delay systems;Colonius;Appl. Math. Opt.,1981
3. F. Colonius (1982a). An algebraic characterization of closed small attainability subspaces of delay systems, submitted for publication to J. Differential Eqns.
4. Optimal Control of linear retarded systems to small solutions;Colonius;Int. J. Control,1982
5. The structural operator F and its role in the theory of retarded systems I;Delfour;J. Math. Anal. Appl.,1980