The Penalty Cell-Centered Finite Element Scheme For Stokes Problem On   General Meshes
  The paper is devoted to the penalty cell-centered finite element scheme (pFECC)on general meshes for the stationary Stokes problems with an incompressible variable viscosity and Dirichlet boundary conditions. In the objectives of this work, we show the rigorous mathematical analysis including the existence, the uniqueness of a discrete solution of the problem, the symmetric and the positive definite stiffness matrix, convergence of the pFECC scheme. 
Ong Thanh Hai, T.T.P. Hoang, H. Nguyen Xuan
math.NA