1. E. Asplund, Frechét differentiability of convex functions,Acta Math. 121, 31–47 (1968).
2. J. Baranger,Thèse d'État: Grenoble, 1973.
3. J. Baranger and R. Temam, Nonconvex optimization problems depending on a parameter,SIAM J. Control 13, 146–152 (1975).
4. B. V. Batalov, V. M. Pietrov, and E. V. Tschebotayev, On possibilities of optimal control of temperature field for diffusion processes (in Russian),Microelectronics 9, 78–90 (1976).
5. F. Colombini and S. Spagnolo, Sur la convergence des solutions d'équations paraboliques,J. Math. Pures Appl. 56, 263–306 (1977).