Robust Two-Level Lower-Order Preconditioners for a Higher-Order Stokes Discretization with Highly Discontinuous Viscosities. - Duilio Conceição; Paulo Goldfeld; Marcus Sarkis (VECPAR, 2006)

Numerical Modeling of Degenerate Equations in Porous Media Flow. - Eduardo Abreu; Duilio Conceição (J. Sci. Comput., 2013)