%0 Journal Article
%A Campbell, Daniel
%A Hencl, Stanislav
%T Approximation of planar Sobolev W2,1 homeomorphisms by piecewise quadratic homeomorphisms and diffeomorphisms
%J ESAIM: Control, Optimisation and Calculus of Variations
%D 2021
%V 27
%I EDP-Sciences
%U https://www.numdam.org/articles/10.1051/cocv/2021019/
%R 10.1051/cocv/2021019
%G en
%F COCV_2021__27_1_A28_0