1. Abdellaoui B., Fernández A. J. and Leonori T. and Younes A., Global fractional Calderón-Zygmund regularity, preprint (2021), arXiv preprint arXiv:2107.06535
2. Abdellaoui, B., Colorado, E., Peral, I.: Effect of the boundary conditions in the behavior of the optimal constant of some Caffarelli-Kohn-Nirenberg inequalities. Application to some doubly critical nonlinear elliptic problems. Adv. Differ. Equ. 11(6), 667–720 (2006)
3. Adams, R.: Sobolev Spaces. Academic Press, Cambridge (1975)
4. Ambrosetti, A., Brezis, H., Cerami, G.: Combined effects of concave and convex non-linearities in some elliptic problems. J. Funct. Anal. 122(2), 519–543 (1994)
5. Azorero, J.G., Peral, I.: Multiplicity of solutions for elliptic problems with critical exponent or with non-symmetric term. Trans. Am. Math. Soc. 323(2), 877–895 (1991)