1. Adams, R.A.: Sobolev spaces. Academic Press, New York (1975)
2. Aubin, J.P.: Un théorème de compacité. CRAS 256, 5042–5044 (1963)
3. Bayen, T., Bonnans, J.F., Silva, F.J.: Characterization of local quadratic growth for strong minima in the optimal control of semi-linear elliptic equations. Trans. Amer. Math. Soc. 366-4, 2063–2087 (2014)
4. Bayen, T., Silva, F.J.: Second order analysis for strong solutions in the optimal control of parabolic equations. Preprint (2015)
5. Di Benedetto, E.: On the local behavior of solutions of degenerate parabolic equations with measurable coefficients. Ann. Scuola Norm. Sup. Pisa CI. Sci. 13, 487–535 (1986)