Discontinuous Galerkin Subgrid Finite Element Method for Heterogeneous Brinkman's Equations. - Oleg P. Iliev; Raytcho D. Lazarov; Joerg Willems (LSSC, 2009)

A Simplified Method for Upscaling Composite Materials with High Contrast of the Conductivity. - Richard E. Ewing; Oleg Iliev 001; Raytcho D. Lazarov; Irina Rybak; Joerg Willems (SIAM J. Sci. Comput., 2009)

Fast numerical upscaling of heat equation for fibrous materials. - Oleg Iliev 001; Raytcho D. Lazarov; Joerg Willems (Comput. Vis. Sci., 2010)

Robust Solvers for Symmetric Positive Definite Operators and Weighted Poincaré Inequalities. - Yalchin Efendiev; Juan Galvis; Raytcho D. Lazarov; Joerg Willems (LSSC, 2011)

Variational Multiscale Finite Element Method for Flows in Highly Porous Media. - Oleg P. Iliev; Raytcho D. Lazarov; Joerg Willems (Multiscale Model. Simul., 2011)

Robust multilevel solvers for high-contrast anisotropic multiscale problems. - Joerg Willems (J. Comput. Appl. Math., 2013)

Robust Multilevel Methods for General Symmetric Positive Definite Operators. - Joerg Willems (SIAM J. Numer. Anal., 2014)