1. Adams R.A.: Sobolev Spaces. Academic Press, New York (1975)
2. Bildhauer M.: Convex Variational Problems: Linear, Nearly Linear and Anisotropic Growth Conditions. Lecture Notes in Mathematics, vol. 1818. Springer, Berlin (2003)
3. Bildhauer M., Fuchs M.: Partial regularity for a class of anisotropic variational integrals with convex hull property. Asympt. Anal. 32, 293–315 (2002)
4. Bildhauer M., Fuchs M.: Higher integrability of the gradient for vectorial minimizers of decomposable variational integrals. Manus. Math. 123, 269–283 (2007)
5. Bildhauer M., Fuchs M.: Partial regularity for local minimizers of splitting-type variational integrals. Asympt. Anal. 55, 33–47 (2007)