ε-Approximability and Quantitative Fatou Property on Lipschitz-graph domains for a class of non-harmonic functions (with M.J. Gonzalez and M. Gryszowka)

Carleson measures on domains in Heisenberg groups (with M. Gryszowka)

Harmonic Curves From Euclidean Domains to Heisenberg Group H1 (with M. Capolli and B. Warhurst)

Hardy spaces and quasiregular mappings (with M.J. Gonzalez)

Isoperimetric inequalities and regularity of A-harmonic functions on surfaces (with G. Veronelli)

Strong Liouville theorems for discrete averaging operators (with José G. Llorente)

Hardy spaces and quasiconformal maps in the Heisenberg group (with K. Faessler)

Schwarzians on the Heisenberg group (with B. Warhurst)

Analysis and Geometry in Metric Spaces, 10(1) (2022), 344–372. doi.org/10.1515/agms-2022-0143

The Journal of Geometric Analysis, 33(3) (2023), Paper No. 80. doi.org/10.1007/s12220-022-01132-6

Isoperimetric inequalities and geometry of level curves of harmonic functions on smooth and singular surfaces (with G. Veronelli)

Hardy spaces for quasiregular mappings and composition operators (with M.J. Gonzalez)

Variational approach to the asymptotic mean-value property for the p-Laplacian on Carnot groups (with A. Kijowski, A. Pinamonti and B. Warhurst)

The Rado-Kneser-Choquet theorem for p-harmonic mappings between Riemannian surfaces (with J. Jääskeläinen, A. Koski)

Rev. Math. Iberoam., 36(6) 2020 doi.org/10.4171/rmi/1183

A Koebe distortion theorem for quasiconformal mappings in the Heisenberg group (with K. Faessler and B. Warhurst)

Ann. Mat. Pura Appl., 199 2020, 147-186, doi.org/10.1007/s10231-019-00871-8

Mean value property and harmonicity on Carnot-Caratheodory groups (with B. Warhurst)

Harmonic functions on metric measure spaces (with M. Gaczkowski and P. Górka)

The prime end capacity of inaccessible prime ends, resolutivity, and the Kellogg property (with N. Shanmugalingam)

Prime ends in metric spaces and boundary extensions of mappings

Prime ends in the Heisenberg group H1 and the boundary behavior of quasiconformal mappings (with B. Warhurst)

Three-spheres theorems for subelliptic quasilinear equations in Carnot groups of Heisenberg-type (with B. Warhurst)

The boundary Harnack inequality for variable exponent p-Laplacian, Carleson estimates, barrier functions and p(.)-harmonic measures (with N. Lundström)

Hölder continuity of quasiminimizers with nonstandard growth (with O. Toivanen)

The Liouville theorems for elliptic equations with nonstandard growth (with P. Górka)

Three-spheres theorem for p-harmonic mappings

Calc. Var. PDEs, 53(3) 2015, 1015-1032, doi: 10.1007/s00526-014-0775-0

Maximal operator in variable exponent Lebesgue spaces on unbounded quasimetric measure spaces (with P. Harjulehto and P. Hästö)

Math. Scand. 116 (1), 2015, 5-22

The geometry of planar p-harmonic mappings: convexity, level curves and the isoperimetric inequality

Ann. Sc. Norm. Super. Pisa. Volume XIV(1), 2015, 263-292, doi: 10.2422/2036-2145.201201_010

Phragmen-Lindelöf theorems for equations with nonstandard growth

Nonlinear Anal. Vol. 97, March 2014, 169-184

Regularity of p(.)-superharmonic functions, the Kellogg property and semiregular boundary points (with A. Björn, J. Björn)

Ann. Inst. H. Poincaré Anal. Non Linéaire, 31 (6), 2014, 1131-1153, doi: 10.1016/j.anihpc.2013.07.012

Prime ends for domains in metric spaces (with A. Björn, J. Björn, N. Shanmugalingam)

Adv. Math. 238 (2013) , 459-505

Remarks on time map for quasilinear equations (with P. Korman)

J. Math. Anal. Appl. Volume 376, Issue 2, 15 April 2011, 686-695

Harnack's Inequality and The Strong p(x)-Laplacian (with P. Hästö)

J. Differential Equations, Volume 250, Issue 3, 1 February 2011, 1631-1649

Non-conformal Loewner type estimates for modulus of curve families (with N. Shanmugalingam)

Ann. Acad. Sci. Fenn. Math., (35), (2010), 609-626

Maximum principles and nonexistence results for radial solutions to equations involving p-Laplacian (with A. Kałamajska)

Math. Methods Appl. Sci., Volume 33, Issue 13, (2010), 1618-1627

Mappings of finite distortion and PDE with nonstandard growth (with P. Hästö)

Int. Math. Res. Not. IMRN, (2010), 1940-1965,doi:10.1093/imrn/rnp192

On p-harmonic mappings in the plane

Nonlinear Anal., Volume 71, Issues 1-2, 1 July 2009-15 July 2009, 502-511

On a variant of the maximum principle involving radial p-Laplacian with applications to nonlinear eigenvalue problems and nonexistence results (with A. Kałamajska)

Topol. Methods Nonlinear Anal., Volume 34, no. 1, (2009), 1-20

The Grötzsch problem in higher dimensions