1. A. Ben-Tal, J.M. Borwein and M. Teboulle, “A dual approach to multidimensionalL p spectral estimation problems,”SIAM Journal on Control and Optimization 26 (1988) 985–996.
2. A. Ben-Tal, J.M. Borwein and M. Teboulle, “Spectral estimation via convex programming,” to appear in:Systems and Management Science by Extremal Methods: Research Honoring Abraham Charnes at Age 70 (Kluwer Academic Publishers, Dordrecht, 1992).
3. J.M. Borwein, “Convex relations in analysis and optimization,” in: S. Schaible and W.T. Ziemba, eds.,Generalized Concavity in Optimization and Economics (Academic Press, New York, 1981) pp. 335–377.
4. J.M. Borwein, “Continuity and differentiability properties of convex operators,”Proceedings of the London Mathematical Society 44 (1982) 420–444.
5. J.M. Borwein, “Subgradients of convex operators,”Mathematische Operationsforschung und Statistik, Series Optimization 15 (1984) 179–191.