1. Lectures on Elliptic Boundary Value Problems;Agmon,1965
2. Boundary control problems with convex cost criterion;Barbu;SIAM J. Control,1980
3. Convexity and Optimization in Banach Spaces;Barbu,1978
4. Vector Measures;Dinculeanu,1967
5. The time-optimal problem for boundary control of the heat equation;Fattorini,1976