T Iwaniec, A Koski,
J Onninen - Revista Matematica Iberoamericana, 2016 - ems.press
Isotropic p -harmonic systems in 2D Jacobian estimates and univalent solutions Page 1 Rev.
Mat. Iberoam. 32 (2016), no. 1, 57–77 doi 10.4171/rmi/881 c European Mathematical Society …