1. Ahern, P., Cohn, W.: Weighted maximal functions and derivatives of invariant Poisson integrals of potentials. Pac. J. Math. 163, 1–16 (1994)
2. Ahlfors, L.: Möbius Transformations in Several Dimensions, Ordway Professorship Lectures in Mathematics. School of Mathematics, University of Minnesota, Minneapolis (1981)
3. Arsenović, M., Kojić, V., Mateljević, M.: On Lipschitz continuity of harmonic quasiregular maps on the unit ball in
$$\mathbb{R}^{n}$$
R
n
. Ann. Acad. Sci. Fenn. Math. 33, 315–318 (2008)
4. Arsenović, M., Manojlović, V.: On the modulus of continuity of harmonic quasiregular mappings on the unit ball in
$$\mathbb{R}^{n}$$
R
n
. Filomat 23, 199–201 (2009)
5. Axler, S., Bourdon, P., Ramey, W.: Harmonic Function Theory. Springer, New York (1992)