1. Sobolev Spaces;Adams,1975
2. Inequalities;Beckenbach,1961
3. Polynomials and Polynomial Inequalities;Borwein,1995
4. On a rearrangement of a smooth function;Brudnyi;Uspekhi Mat. Nauk,1972
5. Adaptive approximation of functions with singularities;Brudnyi;Trudy Mosk. Matem. Obch.,1994