1. R.A. Adams, Sobolev spaces. Academic Press 1975.
2. T. Aubin, Problèmes isopérimétriques et espaces de Sobolev. J. Diff. Geometry 11 (1976), 573–598.
3. T. Aubin, Nonlinear analysis on manifolds. Springer-verlag, 1982.
4. H. Federer, Curvature measures. Trans. Amer. Math. Soc. 9 3 (1959).
5. G.H. Hardy, J. E. Littlewood and G. Polya, Inequalities. Cambridge Univ. Press, 1964.