@article{ZVMMF_2017_57_9_a3, author = {F. V. Lubyshev and M. E. Fairuzov}, title = {Consistent convergence rate estimates in the grid $W_{2,0}^2(\omega)$ norm for difference schemes approximating nonlinear elliptic equations with mixed derivatives and solutions from $W_{2,0}^m(\Omega)$, $3