A. Schikorra, D. Spector, J. Van Schaftingen:
An $L^1$-type estimate for Riesz potentials
(Rev. Mat. Iberoam.) p. 12, 2014

A. Schikorra, T. T. Shieh, D. Spector:
$L^p$-theory for fractional gradient PDE with VMO coefficients
(Atti Accad. Naz. Lincei Rend. Lincei Mat. Appl.) p. 10, 2015

A. Maalaoui, L. Martinazzi, A. Schikorra:
Blow-up behaviour of a fractional Adams-Moser-Trudinger type inequality
  in odd dimension
(preprint) 2015

L. Brasco, E. Lindgren, A. Schikorra:
Higher Holder regularity for the fractional $p-$Laplacian in the superquadratic case
Adv. Math. (Accepted Paper) p. 44, 2018

A. Schikorra, T. T. Shieh, D. Spector:
Regularity for a fractional $p$-Laplace equation
Commun. Contemp. Math. Vol. 20, N. 1, p. 7, 2018