Determine the point source of the heat equation with sparse boundary measurements.

A fast linearized virtual element method on graded meshes for nonlinear time-fractional diffusion equations.

Virtual element method for nonlinear Sobolev equation on polygonal meshes.

A two-grid virtual element method for nonlinear variable-order time-fractional diffusion equation on polygonal meshes.

Superconvergence analysis of a two-grid finite element method for nonlinear time-fractional diffusion equations.