Multigrid preconditioned Krylov subspace methods for three-dimensional numerical solutions of the incompressible Navier-Stokes equations. - Jean Piquet; Xavier Vasseur (Numer. Algorithms, 1998)

A nonstandard multigrid method with flexible multiple semicoarsening for the numerical solution of the pressure equation in a Navier-Stokes solver. - Jean Piquet; Xavier Vasseur (Numer. Algorithms, 2000)