1. Sobolev Spaces;Adams,1975
2. Functions of Bounded Variation and Free Discontinuity Problems;Ambrosio,2000
3. The Gamma Function;Artin,1964
4. G.E. Comi, G. Stefani, A distributional approach to fractional Sobolev spaces and fractional variation: asymptotics, 2019, in preparation.
5. Regularity theory for local and nonlocal minimal surfaces: an overview;Cozzi,2017